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catalyst</title> <meta name="description" content="Search results for: urban catalyst"> <meta name="keywords" content="urban catalyst"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="urban catalyst"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 4550</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: urban catalyst</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4550</span> Research on Urban Design Method of Ancient City Guided by Catalyst Theory</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wang%20Zhiwei">Wang Zhiwei</a>, <a href="https://publications.waset.org/abstracts/search?q=Wang%20Weiwu"> Wang Weiwu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The process of urbanization in China has entered a critical period of transformation from urban expansion and construction to delicate urban design, thus forming a new direction in the field of urban design. So far, catalyst theory has become a prominent guiding strategy in urban planning and design. In this paper, under the background of urban renewal, catalyst theory is taken as the guiding ideology to explore the method of urban design in shouxian county. Firstly, this study briefly introduces and analyzes the catalyst theory. Through field investigation, it is found that the city has a large number of idle Spaces, such as abandoned factories and schools. In the design, the idle Spaces in the county town are utilized and interlinked in space, and functional interaction is carried out from the pattern of the county town. On the one hand, the results showed that the catalyst theory can enhance the vitality of the linear street space with a small amount of monomer construction. On the other hand, the city can also increase the cultural and economic sites of the city without damaging the historical relics and the sense of alterations of the ancient city, to improve the quality of life and quality of life of citizens. The city micro-transformation represented by catalyst theory can help ancient cities like shouxian to realize the activation of the old city and realize the gradual development. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=catalytic%20theory" title="catalytic theory">catalytic theory</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20design" title=" urban design"> urban design</a>, <a href="https://publications.waset.org/abstracts/search?q=China%27s%20ancient%20city" title=" China's ancient city"> China's ancient city</a>, <a href="https://publications.waset.org/abstracts/search?q=Renaissance" title=" Renaissance"> Renaissance</a> </p> <a href="https://publications.waset.org/abstracts/112733/research-on-urban-design-method-of-ancient-city-guided-by-catalyst-theory" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/112733.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">124</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4549</span> A Review of Urban Placemaking Assessment Frameworks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amal%20Abdou">Amal Abdou</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasser%20ElSayed"> Yasser ElSayed</a>, <a href="https://publications.waset.org/abstracts/search?q=Nora%20Selim"> Nora Selim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Public urban spaces are an essential component in any urban settlement. They are quite important in enhancing the quality of urban life while offering social, health, environmental and economic benefits to a city and its residents. Place-making assessment of public urban spaces has been one of the major guiding principles for urban planning and policymaking, of which the definition and evaluation have become the crucial research topic. It is increasingly being essential to mitigate the undesirable impacts of urbanization in cities while improving public urban space’s resilience to environmental, social, and economic changes. Globally, several place-making assessment tools (PATs) have been developed to make such informed decision-making. They act as a catalyst to increase market demand for sustainable products and services by providing a mechanism for recognizing excellence. Assessing how placemaking can positively contribute to urban environments is critical to inform both the continued development of the place and the way placemaking is done as a practice. Therefore, this study aims to review different themes for assessing urban placemaking in public urban spaces. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=urban%20placemaking" title="urban placemaking">urban placemaking</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20urban%20spaces" title=" public urban spaces"> public urban spaces</a>, <a href="https://publications.waset.org/abstracts/search?q=placemaking%20assessment" title=" placemaking assessment"> placemaking assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=literature%20review" title=" literature review"> literature review</a> </p> <a href="https://publications.waset.org/abstracts/164346/a-review-of-urban-placemaking-assessment-frameworks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164346.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">98</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4548</span> Oxidation of Alcohols Types Using Nano-Graphene Oxide (NGO) as Heterogeneous Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Gharib">Ali Gharib</a>, <a href="https://publications.waset.org/abstracts/search?q=Leila%20Vojdanifard"> Leila Vojdanifard</a>, <a href="https://publications.waset.org/abstracts/search?q=Nader%20Noroozi%20Pesyan"> Nader Noroozi Pesyan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mina%20Roshani"> Mina Roshani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We describe an efficient method for oxidation of alcohols to related aldehydes and ketones by hydrogen peroxide as oxidizing agent, under reflux conditions. Nano-graphene oxide (NGO) as a heterogeneous catalyst was used and had their activity compared with other various catalysts. This catalyst was found to be an excellent catalyst for oxidation of alcohols. The effects of various parameters, including catalyst type, nature of the substituent in the alcohols and temperature, on the yield of the carboxylic acids were studied. Nano-graphene oxide was synthesized by the oxidation of graphite powders. This nanocatalyst was found to be highly efficient in this reaction and products were obtained in good to excellent yields. The recovered nano-catalyst was successfully reused for several runs without significant loss in its catalytic activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano-graphene%20oxide" title="nano-graphene oxide">nano-graphene oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=aldehyde" title=" aldehyde"> aldehyde</a>, <a href="https://publications.waset.org/abstracts/search?q=ketone" title=" ketone"> ketone</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a> </p> <a href="https://publications.waset.org/abstracts/40536/oxidation-of-alcohols-types-using-nano-graphene-oxide-ngo-as-heterogeneous-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40536.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">424</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4547</span> Characterization of Fish Bone Catalyst for Biodiesel Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarina%20Sulaiman">Sarina Sulaiman</a>, <a href="https://publications.waset.org/abstracts/search?q=N.Khairudin"> N.Khairudin </a>, <a href="https://publications.waset.org/abstracts/search?q=P.Jamal"> P.Jamal</a>, <a href="https://publications.waset.org/abstracts/search?q=M.Z.%20Alam"> M.Z. Alam</a>, <a href="https://publications.waset.org/abstracts/search?q=Zaki%20Zainudin"> Zaki Zainudin</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Azmi"> S. Azmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, fish bone waste was used as a new catalyst for biodiesel production. Instead of discarding the fish bone waste, it will be utilized as a source for catalyst that can provide significant benefit to the environment. Also, it can be substitute as a calcium oxide source instead of using eggshell, crab shell and snail shell. The XRD and SEM analysis proved that calcined fish bone contains calcium oxide, calcium phosphate and hydroxyapatite. The catalyst was characterized using Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calcinations" title="calcinations">calcinations</a>, <a href="https://publications.waset.org/abstracts/search?q=fish%20bone" title=" fish bone"> fish bone</a>, <a href="https://publications.waset.org/abstracts/search?q=transesterification" title=" transesterification"> transesterification</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20catalyst" title=" waste catalyst"> waste catalyst</a> </p> <a href="https://publications.waset.org/abstracts/7717/characterization-of-fish-bone-catalyst-for-biodiesel-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7717.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">304</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4546</span> Production of Renewable and Clean Bio-Fuel (DME) from Biomethanol over Copper Modified Alumina Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20I.%20Osman">Ahmed I. Osman</a>, <a href="https://publications.waset.org/abstracts/search?q=Jehad%20K.%20Abu-Dahrieh"> Jehad K. Abu-Dahrieh</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20W.%20Rooney"> David W. Rooney</a>, <a href="https://publications.waset.org/abstracts/search?q=Jillian%20Thompson"> Jillian Thompson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of loading of copper on the catalytic performance of different alumina support during the dehydration of methanol to dimethyl ether (DME) was performed in a fixed bed reactor. There are two levels of loading; low loading (1, 2, 4 and 6% Cu wt/wt) and high loading (10 and 15% Cu wt/wt) on both AC350 (alumina catalyst calcined at 350) and AC550 (alumina catalyst calcined at 550), to study the effect of loading and the effect of the support during methanol dehydration to DME (MTD). The catalysts were characterized by TGA, XRD, BET, TPD-NH3, TEM and DRIFT-Pyridine. Under reaction conditions where the temperature ranged from 180-300˚C with a WHSV= 12.1 h-1 it was found that all the catalysts calcined at 550˚C showed higher activity than those calcined at 350˚C. In this study, the optimum catalyst was 6% Cu/AC550. This catalyst showed a high degree of stability, had one half activity of the pure catalyst (AC550) and double the activity of the optimum catalyst calcined at 350˚C (6% Cu/AC350). So, we recommended 6% Cu/AC550 for the production of DME from methanol. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bio-fuel" title="bio-fuel">bio-fuel</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20composite%20catalyst" title=" nano composite catalyst"> nano composite catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=DME" title=" DME"> DME</a>, <a href="https://publications.waset.org/abstracts/search?q=Cu-Al2O3" title=" Cu-Al2O3"> Cu-Al2O3</a> </p> <a href="https://publications.waset.org/abstracts/3494/production-of-renewable-and-clean-bio-fuel-dme-from-biomethanol-over-copper-modified-alumina-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3494.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">297</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4545</span> Comparision of Bioleaching of Metals from Spent Petroleum Catalyst Using Acidithiobacillus Ferrooxidans and Acidthiobacillus Thiooxidans</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haragobinda%20Srichandan">Haragobinda Srichandan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ashish%20Pathak"> Ashish Pathak</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong%20Jin%20Kim"> Dong Jin Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Seoung-Won%20Lee"> Seoung-Won Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present investigation deals with bioleaching of spent petroleum catalyst using At. ferrooxidans and At. thiooxidans. The spent catalyst used in the present study was pretreated with acetone to remove the oily hydrocarbons. FESEM and XPS analysis indicated the presence of metals in sulfide and oxide forms in spent catalyst. Both At. ferrooxidans and At. thiooxidans were found to be highly effective in producing the acid. Bioleaching with At. ferrooxidans and At. thiooxidans led to higher recovery of metals compare to control. During bioleaching similar recoveries of metals were obtained using At. ferrooxidans and At. thiooxidans. This might be due to the presence of metals as soluble oxides and sulphides in the spent catalyst. At the end of bioleaching, about 87-90% Ni, 34% Al, 65-73% Mo and 92-97% V were leached using above bacteria. It is elucidated that bioleaching with At. thiooxidans is comparatively more advantageous due to lower cost of sulphur. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=At.%20ferrooxidans" title="At. ferrooxidans">At. ferrooxidans</a>, <a href="https://publications.waset.org/abstracts/search?q=bioleaching" title=" bioleaching"> bioleaching</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20recovery" title=" metal recovery"> metal recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=spent%20catalyst" title=" spent catalyst"> spent catalyst</a> </p> <a href="https://publications.waset.org/abstracts/1872/comparision-of-bioleaching-of-metals-from-spent-petroleum-catalyst-using-acidithiobacillus-ferrooxidans-and-acidthiobacillus-thiooxidans" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1872.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">292</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4544</span> Optimization of Catalyst Parameters to Get Chlorine Free Bimetallic Catalysts</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Noreen%20Sajjad%20Ghulam%20Hussain">Noreen Sajjad Ghulam Hussain</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Catalysts are prepared by simple physical mixing and thermal treatment of support and metal acetate precursors.The effect of metal ratio and metal loading to produce highly active catalyst for the oxidation of benzyl alcohol are studied. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=catalyst" title="catalyst">catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=acetates" title=" acetates"> acetates</a>, <a href="https://publications.waset.org/abstracts/search?q=benzyl%20alcohols" title=" benzyl alcohols "> benzyl alcohols </a> </p> <a href="https://publications.waset.org/abstracts/1867/optimization-of-catalyst-parameters-to-get-chlorine-free-bimetallic-catalysts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1867.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">436</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4543</span> Preparation and Characterization of Modified ZnO Incorporated into Mesoporous MCM-22 Catalysts and Their Catalytic Performances of Crude Jatropha Oil to Biodiesel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bashir%20Abubakar%20Abdulkadir">Bashir Abubakar Abdulkadir</a>, <a href="https://publications.waset.org/abstracts/search?q=Anita%20Ramli"> Anita Ramli</a>, <a href="https://publications.waset.org/abstracts/search?q=Lim%20Jun%20Wei"> Lim Jun Wei</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoshimitsu%20Uemura"> Yoshimitsu Uemura</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the ZnO/MCM-22 catalyst with different ZnO loading were prepared using conventional wet impregnation process and the catalyst activity was tested for biodiesel production from Jatropha oil. The effects of reaction parameters with regards to catalyst activity were investigated. The synthesized catalysts samples were then characterized by X-ray diffraction (XRD) for crystal phase, Brunauer–Emmett–Teller (BET) for surface area, pore volume and pore size, Field Emission Scanning electron microscope attached to energy dispersive x-ray (FESEM/EDX) for morphology and elemental composition and TPD (NH3 and CO2) for basic and acidic properties of the catalyst. The XRD spectra couple with the EDX result shows the presence of ZnO in the catalyst confirming the positive intercalation of the metal oxide into the mesoporous MCM-22. The synthesized catalyst was confirmed to be mesoporous according to BET findings. Also, the catalysts can be considered as a bifunctional catalyst based on TPD outcomes. Transesterification results showed that the synthesized catalyst was highly efficient and effective to be used for biodiesel production from low grade oil such as Jatropha oil and other industrial application where the high fatty acid methyl ester (FAMEs) yield was achieved at moderate reaction conditions. It was also discovered that the catalyst can be used more than five (5) runs with little deactivation confirming the catalyst to be highly active and stable to the heat of reaction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MCM-22" title="MCM-22">MCM-22</a>, <a href="https://publications.waset.org/abstracts/search?q=synthesis" title=" synthesis"> synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=transesterification" title=" transesterification"> transesterification</a>, <a href="https://publications.waset.org/abstracts/search?q=ZnO" title=" ZnO"> ZnO</a> </p> <a href="https://publications.waset.org/abstracts/80401/preparation-and-characterization-of-modified-zno-incorporated-into-mesoporous-mcm-22-catalysts-and-their-catalytic-performances-of-crude-jatropha-oil-to-biodiesel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80401.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">208</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4542</span> Oxidation Activity of Platinum-Ruthenium-Tin Ternary Alloy Catalyst on Bio-Alcohol</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=An-Ya%20Lo">An-Ya Lo</a>, <a href="https://publications.waset.org/abstracts/search?q=Yi-Chen%20Chung"> Yi-Chen Chung</a>, <a href="https://publications.waset.org/abstracts/search?q=Yun-Chi%20Hsu"> Yun-Chi Hsu</a>, <a href="https://publications.waset.org/abstracts/search?q=Chuan-Ming%20Tseng"> Chuan-Ming Tseng</a>, <a href="https://publications.waset.org/abstracts/search?q=Chiu-Yue%20Lin"> Chiu-Yue Lin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the ternary alloy catalyst Pt20RuxSny (where 20, x, y represent mass fractions of Pt, Ru, and Sn, respectively) was optimized for the preliminary study of bio-ethanol fuel cells (BAFC). The morphology, microstructure, composition, phase-structures, and electrochemical properties of Pt20RuxSny catalyst were examined by SEM, TEM, EDS-mapping, XRD, and potentiostat. The effect of Sn content on electrochemical active surface (EAS) and oxidation activity were discussed. As a result, the additional Sn greatly improves the efficiency of Pt20RuxSny, either x=0 or 10. Through discussing the difference between ethanol and glycol oxidations, the mechanism of tolerance against poisoning has been proved. Overall speaking, the catalytic activity are in the order of Pt20RuxSny > Pt20Rux > Pt20Sny in both ethanol and glycol systems. Finally, Pt20Ru10Sn15 catalyst was successfully applied to demonstrate the feasibility of using bio-alcohol. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pt-Sn%20alloy%20catalyst" title="Pt-Sn alloy catalyst">Pt-Sn alloy catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=Pt-Ru-Sn%20alloy%20catalyst" title=" Pt-Ru-Sn alloy catalyst"> Pt-Ru-Sn alloy catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=fuel%20cell" title=" fuel cell"> fuel cell</a>, <a href="https://publications.waset.org/abstracts/search?q=ethanol" title=" ethanol"> ethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=ethylene%20glycol" title=" ethylene glycol"> ethylene glycol</a> </p> <a href="https://publications.waset.org/abstracts/54818/oxidation-activity-of-platinum-ruthenium-tin-ternary-alloy-catalyst-on-bio-alcohol" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54818.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">417</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4541</span> Synthesis of α-Diimin Nickel(II) Catalyst Supported on Graphene and Graphene Oxide for Ethylene Slurry Polymerization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehrji%20Khosravan">Mehrji Khosravan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Fathali-Sianib"> Mostafa Fathali-Sianib</a>, <a href="https://publications.waset.org/abstracts/search?q=Davood%20Soudbar"> Davood Soudbar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sasan%20Talebnezhad"> Sasan Talebnezhad</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad-Reza%20Ebrahimi"> Mohammad-Reza Ebrahimi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The late transition metal catalyst of the end group of transition metals in the periodic table as Ni, Fe, Co, and Pd was grown up rapidly in polyolefin industries recently. These metals with suitable ligands exhibited special characteristic properties and appropriate activities in the production of polyolefins. The ligand 1,4-bis (2,6-diisopropyl phenyl) acenaphthene was synthesized by reaction of 2,6-diisopropyl aniline and acenaphthenequinone. The ligand was added to nickel (II) dibromide salt for synthesis the 1,4-bis (2,6 diisopropylphenyl) acenaphthene nickel (II) dibromide catalyst. The structure of the ligand characterized by IR technique. The catalyst then deposited on graphene and graphene oxide by vander walss-attachment for use in Ethylene slurry polymerization process in the presence of catalyst activator such as methylaluminoxane (MAO) in hexane solvent. The structure of the catalyst characterized by IR and TEM techniques and some of the polymers were characterized by DSC. The highest activity was achieved at 600 C for catalyst. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-diimine%20nickel%20%28II%29%20complex" title="α-diimine nickel (II) complex">α-diimine nickel (II) complex</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20as%20supported%20catalyst" title=" graphene as supported catalyst"> graphene as supported catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=late%20transition%20metal" title=" late transition metal"> late transition metal</a>, <a href="https://publications.waset.org/abstracts/search?q=ethylene%20polymerization" title=" ethylene polymerization"> ethylene polymerization</a> </p> <a href="https://publications.waset.org/abstracts/22317/synthesis-of-a-diimin-nickelii-catalyst-supported-on-graphene-and-graphene-oxide-for-ethylene-slurry-polymerization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22317.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">386</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4540</span> Cellulose Supported Heterogeneous Pd(II) Catalyst for Synthesis of Biaryls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Talat%20Baran">Talat Baran</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Suzuki C(sp2)-C(sp2) coupling reaction is considered to be one of the best ways for the synthesis of biaryl compounds. There are many studies reporting the catalytic performance of palladium catalyst in Suzuki coupling reactions. Natural biopolymer (such as zeolite, carbon, silica, and chitosan) supporting catalysts have been lately attracted interest because of their low-cost, nontoxicity, and eco-friendliness. One of the most important natural biopolymer is cellulose, which is widely considered as an eco-friendly biopolymer due to its biodegradable, non-toxic and renewable nature. In this study, (1) cellulose supported Pd(II) catalyst was synthesized (2) its chemical structure was characterized by FT-IR, SEM/EDAX, XRD, TG-DTG, ICP-OES techniques (3) to investigate the performance of the catalyst in Suzuki coupling reactions by using microwave irradiation technique (4) reusability of the catalyst was done under optimum conditions. This cellulose supported Pd(II) catalyst exhibited high selectivity and efficiency in Suzuki coupling reactions under mild conditions (50°C). High TON and TOF values were recorded for the catalyst. Also, the reusability tests showed the catalysts could be used for several times in consequence of reusability tests. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=palladium" title="palladium">palladium</a>, <a href="https://publications.waset.org/abstracts/search?q=cellulose" title=" cellulose"> cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=Schiff%20base" title=" Schiff base"> Schiff base</a>, <a href="https://publications.waset.org/abstracts/search?q=reusability" title=" reusability"> reusability</a> </p> <a href="https://publications.waset.org/abstracts/54022/cellulose-supported-heterogeneous-pdii-catalyst-for-synthesis-of-biaryls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54022.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">252</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4539</span> The Effect of Ni/Dolomite Catalyst for Production of Hydrogen from NaBH₄</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Burcu%20Kiren">Burcu Kiren</a>, <a href="https://publications.waset.org/abstracts/search?q=Alattin%20CAkan"> Alattin CAkan</a>, <a href="https://publications.waset.org/abstracts/search?q=Nezihe%20Ayas"> Nezihe Ayas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hydrogen will be arguably the best fuel in the future as it is the most abundant element in the universe. Hydrogen, as a fuel, is notably environmentally benign, sustainable and has high energy content compared to other sources of energy. It can be generated from both conventional and renewable sources. The hydrolysis reaction of metal hydrides provides an option for hydrogen production in the presence of a catalyst. In this study, Ni/dolomite catalyst was synthesized by the wet impregnation method for hydrogen production by hydrolysis reaction of sodium borohydride (NaBH4). Besides, the synthesized catalysts characterizations were examined by means of thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Brunauer –Emmett – Teller (BET) and scanning electron microscopy (SEM). The influence of reaction temperature (25-75 °C), reaction time (15-60 min.), amount of catalyst (50-250 mg) and active metal loading ratio (20,30,40 wt.%) were investigated. The catalyst prepared with 30 wt.% Ni was noted as the most suitable catalyst, achieving of 35.18% H₂ and hydrogen production rate of 19.23 mL/gcat.min at 25 °C at reaction conditions of 5 mL of 0.25 M NaOH and 100 mg NaBH₄, 100 mg Ni/dolomite. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sodium%20borohydride" title="sodium borohydride">sodium borohydride</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrolysis" title=" hydrolysis"> hydrolysis</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=Ni%2Fdolomite" title=" Ni/dolomite"> Ni/dolomite</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen" title=" hydrogen"> hydrogen</a> </p> <a href="https://publications.waset.org/abstracts/128593/the-effect-of-nidolomite-catalyst-for-production-of-hydrogen-from-nabh4" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128593.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">166</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4538</span> Dependence of Ionomer Loading on the Hydrogen Generation Rate of a Proton Exchange Membrane Electrolyzer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yingjeng%20James%20Li">Yingjeng James Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Chih%20Chi%20Hsu"> Chih Chi Hsu</a>, <a href="https://publications.waset.org/abstracts/search?q=Chiao-Chih%20Hu"> Chiao-Chih Hu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Membrane electrode assemblies MEAs for proton exchange membrane PEM water electrolyzers were prepared by employing 175um perfluorosulfonic acid PFSA membranes as the PEM, onto which iridium oxide catalyst was coated on one side as the anode and platinum catalyst was coated on the other side as the cathode. The cathode catalyst ink was prepared so that the weight ratio of the catalyst powder to ionomer was 75:25, 70:30, 65:35, 60:40, and 55:45, respectively. Whereas, the ratio of catalyst powder to ionomer of the anode catalyst ink keeps constant at 50:50. All the MEAs have a catalyst coated area of 5cm*5cm. The test cell employs a platinum plated titanium grid as anode gas diffusion media; whereas, carbon paper was employed as the cathode gas diffusion media. The measurements of the MEA gases production rate were carried out by holding the cell voltage ranging from 1.6 to 2.8 volts at room temperature. It was found that the MEA with cathode catalyst to ionomer ratio of 65:35 gives the largest hydrogen production rate which is 2.8mL/cm2*min. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electrolyzer" title="electrolyzer">electrolyzer</a>, <a href="https://publications.waset.org/abstracts/search?q=membrane%20electrode%20assembly" title=" membrane electrode assembly"> membrane electrode assembly</a>, <a href="https://publications.waset.org/abstracts/search?q=proton%20exchange%20membrane" title=" proton exchange membrane"> proton exchange membrane</a>, <a href="https://publications.waset.org/abstracts/search?q=ionomer" title=" ionomer"> ionomer</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen" title=" hydrogen"> hydrogen</a> </p> <a href="https://publications.waset.org/abstracts/72426/dependence-of-ionomer-loading-on-the-hydrogen-generation-rate-of-a-proton-exchange-membrane-electrolyzer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72426.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">255</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4537</span> Inflating the Public: A Series of Urban Interventions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Veronika%20Antoniou">Veronika Antoniou</a>, <a href="https://publications.waset.org/abstracts/search?q=Rene%20Carraz"> Rene Carraz</a>, <a href="https://publications.waset.org/abstracts/search?q=Yiorgos%20Hadjichristou"> Yiorgos Hadjichristou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Green Urban Lab took the form of public installations that were placed at various locations in four cities in Cyprus. These installations - through which a series of events, activities, workshops and research took place - were the main tools in regenerating a series of urban public spaces in Cyprus. The purpose of this project was to identify issues and opportunities related to public space and to offer guidelines on how design and participatory democracy improvements could strengthen civil society, while raising the quality of the urban public scene. Giant inflatable structures were injected in important urban fragments in order to accommodate series of events. The design and playful installation generated a wide community engagement. The fluid presence of the installations acted as a catalyst for social interaction. They were accessed and viewed effortlessly and surprisingly, creating opportunities to rediscover public spaces. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bottom-up%20initiatives" title="bottom-up initiatives">bottom-up initiatives</a>, <a href="https://publications.waset.org/abstracts/search?q=creativity" title=" creativity"> creativity</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20space" title=" public space"> public space</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20innovation" title=" social innovation"> social innovation</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20environments" title=" urban environments"> urban environments</a> </p> <a href="https://publications.waset.org/abstracts/30648/inflating-the-public-a-series-of-urban-interventions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30648.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">516</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4536</span> Waste Bone Based Catalyst: Characterization and Esterification Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amit%20Keshav">Amit Keshav</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Waste bone, produced in large quantity (8-10 kg./day) from a slaughterhouse, could be a cheap (cost $0.20 per kg) substitute for commercial catalysts. In the present work, catalyst for esterification reaction was prepared from waste bone and characterized by various techniques. Bone was deoiled and then sulfonated. Fourier-transform infrared spectroscopy (FTIR) spectra of prepared catalyst predicted –OH vibration at 3416 and 1630 cm⁻¹, S-O stretching at 1124 cm⁻¹ and intense bands of hydroxypatite in a region between 500 and 700 cm⁻¹. X-ray diffraction (XRD) predicts peaks of hydroxyapatite, CaO, and tricalcium phosphate. Scanning electron microscope (SEM) was employed to reveal the presence of non-uniformity deposited fine particles on the catalyst surface that represents active acidic sites. The prepared catalyst was employed to study its performance on esterification reaction between acrylic acid and ethanol in a molar ratio of 1:1 at a set temperature of 60 °C. Results show an equilibrium conversion of 49% which is matched to the commercial catalysts employed in literature. Thus waste bone could be a good catalyst for acrylic acid removal from waste industrial streams via the process of esterification.Keywords— Heterogeneous catalyst, characterization, esterification, equilibrium conversion <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heterogeneous%20catalyst" title="heterogeneous catalyst">heterogeneous catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=characterization" title=" characterization"> characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=esterification" title=" esterification"> esterification</a>, <a href="https://publications.waset.org/abstracts/search?q=equilibrium%20conversion" title=" equilibrium conversion"> equilibrium conversion</a> </p> <a href="https://publications.waset.org/abstracts/112071/waste-bone-based-catalyst-characterization-and-esterification-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/112071.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">144</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4535</span> Urban Catalyst through Traditional Market Revitalization towards the MICE Tourism in Surakarta</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Istijabatul%20Aliyah">Istijabatul Aliyah</a>, <a href="https://publications.waset.org/abstracts/search?q=Bambang%20Setioko"> Bambang Setioko</a>, <a href="https://publications.waset.org/abstracts/search?q=Rara%20Sugiarti"> Rara Sugiarti </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Surakarta is one of the cities which are formed with the concept of Javanese cosmology. As a traditional town of Java, Surakarta is known as ‘the paradise’ of traditional markets. Since its establishment, Surakarta is formed with Catur Gatra Tunggal or Four Single-Slot concept (palace, square, mosques, and markets). Current development in Surakarta downtown today indicates that traditional markets have improved themselves in both physical and non-physical aspects. The efforts start from the market façade revitalization, restoration and the overall development of market; up to social activities, competition between traders or large celebrations in the neighbourhood market. This research was conducted in Surakarta, which is aimed at: identifying the role of traditional market revitalization efforts in the development of a city. This study employs several methods of analysis, namely: 1) Spatial analysis for mapping the distribution of traditional markets in the city constellation, 2) Category-Based Analysis (CBA) to classify the revitalization of traditional markets that has an influence in the development of the city, and 3) Interactive Method of Analysis. The results of this research indicate that the presence of a constellation of traditional markets in Surakarta is dominated by the presence of Gede Market, not only as the oldest traditional market, but also as a center of economic and socio-cultural activities of the community. The role of traditional market revitalization in the development of a town is as an Urban Catalyst towards a MICE city in the sense that the revitalization effort, even done in a relatively short time and not yet covering the overall objects, is able to establish brand image of Surakarta as a city of culture which is friendly and ready to be MICE tourism city. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=traditional%20market%20revitalization" title="traditional market revitalization">traditional market revitalization</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20catalyst" title=" urban catalyst"> urban catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=MICE%20tourism" title=" MICE tourism"> MICE tourism</a>, <a href="https://publications.waset.org/abstracts/search?q=Surakarta" title=" Surakarta"> Surakarta</a> </p> <a href="https://publications.waset.org/abstracts/19910/urban-catalyst-through-traditional-market-revitalization-towards-the-mice-tourism-in-surakarta" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19910.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">381</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4534</span> Development of Catalyst from Waste Egg Shell for Biodiesel Production by Using Waste Vegetable Oil</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Victor%20Chinecherem%20Ejeke">Victor Chinecherem Ejeke</a>, <a href="https://publications.waset.org/abstracts/search?q=Raphael%20Eze%20Nnam"> Raphael Eze Nnam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main objective of this research is to produce biodiesel from waste vegetable oil using activated eggshell waste as solid catalysts. A transesterification reaction was performed for the conversion to biodiesel. Waste eggshells were calcined at 700°C, 800°C and 900°C for a time period of 3hrs for the preparation of the renewable catalyst. The calcined waste eggshell catalyst was characterized using X-Ray Florescence (XRF) Spectroscopy, which revealed CaO as the major constituent (90.86%); this was further confirmed by X-Ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) analyses. The prepared catalyst was used for transesterification reaction and the effects of calcination temperature (700 to 900°C), Deep Eutectic Solvent DES loading (3 to 18 wt. %), Waste Egg Shell (WES) catalyst loading (6 to 14 wt. %) on the conversion to biodiesel were studied. The yield of biodiesel using a waste eggshell catalyst (91%) is comparable to conventional catalyst like sodium hydroxide with a yield of 80-90%. The maximum biodiesel production yield was obtained at a specific oil-to methanol molar ratio of 1:10, a temperature of 65°C and a catalyst loading of 14g-wt%. The biodiesel produced was characterized as being composed of methyl Tetradecanoate (C₁₄H₂₈O₂) 30.92% using the Gas Chromatographic (GC-MS) analysis. The fuel properties of the biodiesel (Flashpoint 138ᵒC) were comparable to commercial diesel, and hence it can be used in compression-ignition engines. The results indicated that the catalysts derived from waste eggshell had high potential to be used as biodiesel production catalysts in transesterification of waste vegetable oil with the advantage of reusability and also not requiring water washing steps. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=waste%20vegetable%20oil" title="waste vegetable oil">waste vegetable oil</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst "> catalyst </a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel "> biodiesel </a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20egg%20shell" title=" waste egg shell"> waste egg shell</a> </p> <a href="https://publications.waset.org/abstracts/113339/development-of-catalyst-from-waste-egg-shell-for-biodiesel-production-by-using-waste-vegetable-oil" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/113339.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4533</span> Numerical Modeling and Prediction of Nanoscale Transport Phenomena in Vertically Aligned Carbon Nanotube Catalyst Layers by the Lattice Boltzmann Simulation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seungho%20Shin">Seungho Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Keunwoo%20Choi"> Keunwoo Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Akbar"> Ali Akbar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sukkee%20Um"> Sukkee Um</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the nanoscale transport properties and catalyst utilization of vertically aligned carbon nanotube (VACNT) catalyst layers are computationally predicted by the three-dimensional lattice Boltzmann simulation based on the quasi-random nanostructural model in pursuance of fuel cell catalyst performance improvement. A series of catalyst layers are randomly generated with statistical significance at the 95% confidence level to reflect the heterogeneity of the catalyst layer nanostructures. The nanoscale gas transport phenomena inside the catalyst layers are simulated by the D3Q19 (i.e., three-dimensional, 19 velocities) lattice Boltzmann method, and the corresponding mass transport characteristics are mathematically modeled in terms of structural properties. Considering the nanoscale reactant transport phenomena, a transport-based effective catalyst utilization factor is defined and statistically analyzed to determine the structure-transport influence on catalyst utilization. The tortuosity of the reactant mass transport path of VACNT catalyst layers is directly calculated from the streaklines. Subsequently, the corresponding effective mass diffusion coefficient is statistically predicted by applying the pre-estimated tortuosity factors to the Knudsen diffusion coefficient in the VACNT catalyst layers. The statistical estimation results clearly indicate that the morphological structures of VACNT catalyst layers reduce the tortuosity of reactant mass transport path when compared to conventional catalyst layer and significantly improve consequential effective mass diffusion coefficient of VACNT catalyst layer. Furthermore, catalyst utilization of the VACNT catalyst layer is substantially improved by enhanced mass diffusion and electric current paths despite the relatively poor interconnections of the ion transport paths. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lattice%20Boltzmann%20method" title="Lattice Boltzmann method">Lattice Boltzmann method</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20transport%20phenomena" title=" nano transport phenomena"> nano transport phenomena</a>, <a href="https://publications.waset.org/abstracts/search?q=polymer%20electrolyte%20fuel%20cells" title=" polymer electrolyte fuel cells"> polymer electrolyte fuel cells</a>, <a href="https://publications.waset.org/abstracts/search?q=vertically%20aligned%20carbon%20nanotube" title=" vertically aligned carbon nanotube"> vertically aligned carbon nanotube</a> </p> <a href="https://publications.waset.org/abstracts/98114/numerical-modeling-and-prediction-of-nanoscale-transport-phenomena-in-vertically-aligned-carbon-nanotube-catalyst-layers-by-the-lattice-boltzmann-simulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98114.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">201</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4532</span> Synthesis of Antifungal by the Use of Green Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elmeliani%20M%E2%80%99Hammed">Elmeliani M’Hammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The work is carried out for the synthesis of antifungal effective against the fungus Fusarium oxysporum, Albedinis (Foa), the causative agent of bayoud, dates palm disease, through the use of raw clay as a green catalyst. The Aza-Michael reaction of amine addition to α, β-unsaturated alkene was carried out using the crude clay as a green catalyst to synthesize the antifungal agent bayoud. The reaction was carried out under favorable conditions, ambient temperature, without solvent, and a green catalyst "loves the environment" that the product that was synthesized gave us a high yield and excellent chemo selectivity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=raw%20clay" title="raw clay">raw clay</a>, <a href="https://publications.waset.org/abstracts/search?q=amines" title=" amines"> amines</a>, <a href="https://publications.waset.org/abstracts/search?q=alkenes" title=" alkenes"> alkenes</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=antifungal" title=" antifungal"> antifungal</a>, <a href="https://publications.waset.org/abstracts/search?q=bayoud" title=" bayoud"> bayoud</a>, <a href="https://publications.waset.org/abstracts/search?q=date%20palms" title=" date palms"> date palms</a> </p> <a href="https://publications.waset.org/abstracts/171504/synthesis-of-antifungal-by-the-use-of-green-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171504.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">98</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4531</span> Integrated Two Stage Processing of Biomass Conversion to Hydroxymethylfurfural Esters Using Ionic Liquid as Green Solvent and Catalyst: Synthesis of Mono Esters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Komal%20Kumar">Komal Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sreedevi%20Upadhyayula"> Sreedevi Upadhyayula</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, a two-stage process was established for the synthesis of HMF esters using ionic liquid acid catalyst. Ionic liquid catalyst with different strength of the Bronsted acidity was prepared in the laboratory and characterized using 1H NMR, FT-IR, and 13C NMR spectroscopy. Solid acid catalyst from the ionic liquid catalyst was prepared using the immobilization method. The acidity of the synthesized acid catalyst was measured using Hammett function and titration method. Catalytic performance was evaluated for the biomass conversion to 5-hydroxymethylfurfural (5-HMF) and levulinic acid (LA) in methyl isobutyl ketone (MIBK)-water biphasic system. A good yield of 5-HMF and LA was found at the different composition of MIBK: Water. In the case of MIBK: Water ratio 10:1, good yield of 5-HMF was observed at ambient temperature 150˚C. Upgrading of 5-HMF into monoesters from the reaction of 5-HMF and reactants using biomass-derived monoacid were performed. Ionic liquid catalyst with -SO₃H functional group was found to be best efficient in comparative of a solid acid catalyst for the esterification reaction and biomass conversion. A good yield of 5-HMF esters with high 5-HMF conversion was found to be at 105˚C using the best active catalyst. In this process, process A was the hydrothermal conversion of cellulose and monomer into 5-HMF and LA using acid catalyst. And the process B was the esterification followed by using similar acid catalyst. All monoesters of 5-HMF synthesized here can be used in chemical, cross linker for adhesive or coatings and pharmaceutical industry. A theoretical density functional theory (DFT) study for the optimization of the ionic liquid structure was performed using the Gaussian 09 program to find out the minimum energy configuration of ionic liquid catalyst. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass%20conversion" title="biomass conversion">biomass conversion</a>, <a href="https://publications.waset.org/abstracts/search?q=5-HMF" title=" 5-HMF"> 5-HMF</a>, <a href="https://publications.waset.org/abstracts/search?q=Ionic%20liquid" title=" Ionic liquid"> Ionic liquid</a>, <a href="https://publications.waset.org/abstracts/search?q=HMF%20ester" title=" HMF ester"> HMF ester</a> </p> <a href="https://publications.waset.org/abstracts/103568/integrated-two-stage-processing-of-biomass-conversion-to-hydroxymethylfurfural-esters-using-ionic-liquid-as-green-solvent-and-catalyst-synthesis-of-mono-esters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/103568.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">251</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4530</span> Learning about the Strengths and Weaknesses of Urban Climate Action Plans</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Prince%20Dacosta%20Aboagye">Prince Dacosta Aboagye</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayyoob%20Sharifi"> Ayyoob Sharifi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cities respond to climate concerns mainly through their climate action plans (CAPs). A comprehensive content analysis of the dynamics in existing urban CAPs is not well represented in the literature. This literature void presents a difficulty in appreciating the strengths and weaknesses of urban CAPs. Here, we perform a qualitative content analysis (QCA) on CAPs from 278 cities worldwide and use text-mining tools to map and visualize the relevant data. Our analysis showed a decline in the number of CAPs developed and published following the global COVID-19 lockdown period. Evidently, megacities are leading the deep decarbonisation agenda. We also observed a transition from developing mainly mitigation-focused CAPs pre-COP21 to both mitigation and adaptation CAPs. A lack of inclusiveness in local climate planning was common among European and North American cities. The evidence is a catalyst for understanding the trends in existing urban CAPs to shape future urban climate planning. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=urban" title="urban">urban</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20action%20plans" title=" climate action plans"> climate action plans</a>, <a href="https://publications.waset.org/abstracts/search?q=strengths" title=" strengths"> strengths</a>, <a href="https://publications.waset.org/abstracts/search?q=weaknesses" title=" weaknesses"> weaknesses</a> </p> <a href="https://publications.waset.org/abstracts/161978/learning-about-the-strengths-and-weaknesses-of-urban-climate-action-plans" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161978.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">97</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4529</span> Biodiesel Production from Animal Fat Using Trans-Esterification Process with Zeolite as a Solid Catalyst to Improve the Efficiency of Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dinda%20A.%20Utami">Dinda A. Utami</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20N.%20Alfarizi"> Muhammad N. Alfarizi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study was to determine the ability of zeolite catalyst for the trans- esterification reaction in biodiesel production from animal fat. The ability of the zeolite as a catalyst is determined by the structure and composition of the zeolite. An important factor that determines the properties of zeolites in catalysis includes adsorption capability to the compound of the reactants. Zeolites with a pore size of specific properties selectively adsorbing molecules. A molecule can be adsorbed by either the zeolite cavities if the size and shape of the molecule in accordance with the size and shape of the cavity in the zeolite. At this time, it is common to use homogeneous catalysts for biodiesel. We know these catalysts have some disadvantages in its use. Such as the difficulty of separation of the product with the catalyst, the generation of waste that is harmful to the environment due to residual catalysts can’t be reused, and the difficulty of handling and storage. But nowadays, solid catalyst developed technically to improve the efficiency of biodiesel production. In this case of study, we used trans-esterification process wherein the triglyceride is reacted with an alcohol with zeolite as a solid catalyst and it will produce biodiesel and glycerol as a byproduct. Development of solid catalyst seems to be the perfect solution to address the problems associated with homogeneous catalysts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title="biodiesel">biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=animal%20fat" title=" animal fat"> animal fat</a>, <a href="https://publications.waset.org/abstracts/search?q=trans%20esterification" title=" trans esterification"> trans esterification</a>, <a href="https://publications.waset.org/abstracts/search?q=zeolite%20catalyst" title=" zeolite catalyst"> zeolite catalyst</a> </p> <a href="https://publications.waset.org/abstracts/59341/biodiesel-production-from-animal-fat-using-trans-esterification-process-with-zeolite-as-a-solid-catalyst-to-improve-the-efficiency-of-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59341.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">262</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4528</span> Investigation on Fischer-Tropsch Synthesis over Cobalt-Gadolinium Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jian%20Huang">Jian Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Weixin%20Qian"> Weixin Qian</a>, <a href="https://publications.waset.org/abstracts/search?q=Haitao%20Zhang"> Haitao Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Weiyong%20Ying"> Weiyong Ying</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cobalt-gadolinium catalyst for Fischer-Tropsch synthesis was prepared by impregnation method with commercial silica gel, and its texture properties were characterized by BET, XRD, and TPR. The catalytic performance of the catalyst was tested in a fixed bed reactor. The results showed that the addition of gadolinium to the cobalt catalyst might decrease the size of cobalt particles, and increased the dispersion of catalytic active cobalt phases. The carbon number distributions for the catalysts was calculated by ASF equation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fischer-Tropsch%20synthesis" title="Fischer-Tropsch synthesis">Fischer-Tropsch synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=cobalt-based%20catalysts" title=" cobalt-based catalysts"> cobalt-based catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=gadolinium" title=" gadolinium"> gadolinium</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20number%20distributions" title=" carbon number distributions"> carbon number distributions</a> </p> <a href="https://publications.waset.org/abstracts/48437/investigation-on-fischer-tropsch-synthesis-over-cobalt-gadolinium-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48437.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">379</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4527</span> Direct Conversion of Crude Oils into Petrochemicals under High Severity Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anaam%20H.%20Al-ShaikhAli">Anaam H. Al-ShaikhAli</a>, <a href="https://publications.waset.org/abstracts/search?q=Mansour%20A.%20Al-Herz"> Mansour A. Al-Herz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The research leverages the proven HS-FCC technology to directly crack crude oils into petrochemical building blocks. Crude oils were subjected to an optimized hydro-processing process where metal contaminants and sulfur were reduced to an acceptable level for feeding the crudes into the HS-FCC technology. The hydro-processing is achieved through a fixed-bed reactor which is composed of 3 layers of catalysts. The crude oil is passed through a dementalization catalyst followed by a desulfurization catalyst and finally a de-aromatization catalyst. The hydroprocessing was conducted at an optimized liquid hourly space velocity (LHSV), temperature, and pressure for an optimal reduction of metals and sulfur from the crudes. The hydro-processed crudes were then fed into a micro activity testing (MAT) unit to simulate the HS-FCC technology. The catalytic cracking of crude oils was conducted over tailored catalyst formulations under an optimized catalyst/oil ratio and cracking temperature for optimal production of total light olefins. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=petrochemical" title="petrochemical">petrochemical</a>, <a href="https://publications.waset.org/abstracts/search?q=catalytic%20cracking" title=" catalytic cracking"> catalytic cracking</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst%20synthesis" title=" catalyst synthesis"> catalyst synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=HS-FCC%20technology" title=" HS-FCC technology"> HS-FCC technology</a> </p> <a href="https://publications.waset.org/abstracts/167542/direct-conversion-of-crude-oils-into-petrochemicals-under-high-severity-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167542.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">93</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4526</span> Optimization of Biodiesel Production from Sunflower Oil Using Central Composite Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pascal%20Mwenge">Pascal Mwenge</a>, <a href="https://publications.waset.org/abstracts/search?q=Jefrey%20Pilusa"> Jefrey Pilusa</a>, <a href="https://publications.waset.org/abstracts/search?q=Tumisang%20Seodigeng"> Tumisang Seodigeng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current study investigated the effect of catalyst ratio and methanol to oil ratio on biodiesel production by using central composite design. Biodiesel was produced by transesterification using sodium hydroxide as a homogeneous catalyst, a laboratory scale reactor consisting of flat bottom flask mounts with a reflux condenser and a heating plate was used to produce biodiesel. Key parameters, including, time, temperature and mixing rate were kept constant at 60 minutes, 60 <sup>o</sup>C and 600 RPM, respectively. From the results obtained, it was observed that the biodiesel yield depends on catalyst ratio and methanol to oil ratio. The highest yield of 50.65% was obtained at catalyst ratio of 0.5 wt.% and methanol to oil mole ratio 10.5. The analysis of variances of biodiesel yield showed the R Squared value of 0.8387. A quadratic mathematical model was developed to predict the biodiesel yield in the specified parameters ranges. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ANOVA" title="ANOVA">ANOVA</a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel"> biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=CCD" title=" CCD"> CCD</a>, <a href="https://publications.waset.org/abstracts/search?q=transesterification" title=" transesterification"> transesterification</a> </p> <a href="https://publications.waset.org/abstracts/92550/optimization-of-biodiesel-production-from-sunflower-oil-using-central-composite-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92550.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">206</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4525</span> Alginate Wrapped NiO-ZnO Nanocomposites-Based Catalyst for the Reduction of Methylene Blue</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Adam%20Abakar">Mohamed A. Adam Abakar</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20M.%20Asiri"> Abdullah M. Asiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Sher%20Bahadar%20Khan"> Sher Bahadar Khan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, nickel oxide-zinc oxide (NiO-ZnO) catalyst was embedded in an alginate polymer (Na alg/NiO-ZnO), a nanocomposite that was used as a nano-catalyst for catalytic conversion of deleterious contaminants such as organic dyes (Acridine Orange “ArO”, Methylene Blue “MB”, Methyl Orange “MO”) and 4-Nitrophenol “4-NP” as well. FESEM, EDS, FTIR and XRD techniques were used to identify the shape and structure of the nano-catalyst (Na alg/NiO-ZnO). UV spectrophotometry is used to collect the results and it showed greater and faster reduction rate for MB (illustrated in figures 2, 3, 4 and 5). Data recorded and processed, drawing and analysis of graphs achieved by using Origin 2018. Reduction percentage of MB was assessed to be 95.25 % in just 13 minutes. Furthermore, the catalytic property of Na alg/NiO-ZnO in the reduction of organic dyes was investigated using various catalyst amounts, dye types, reaction times and reducing agent dosages at room temperature (rt). NaBH4-assisted reduction of organic dyes was studied using alg/NiO-ZnO as a potential catalyst. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alginate" title="Alginate">Alginate</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20oxides" title=" metal oxides"> metal oxides</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposites-based" title=" nanocomposites-based"> nanocomposites-based</a>, <a href="https://publications.waset.org/abstracts/search?q=catalysts" title=" catalysts"> catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=reduction" title=" reduction"> reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalytic%20degradation" title=" photocatalytic degradation"> photocatalytic degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20treatment" title=" water treatment"> water treatment</a> </p> <a href="https://publications.waset.org/abstracts/169064/alginate-wrapped-nio-zno-nanocomposites-based-catalyst-for-the-reduction-of-methylene-blue" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169064.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">72</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4524</span> Influence of MgO Physically Mixed with Tungsten Oxide Supported Silica Catalyst on Coke Formation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thidaya%20Thitiapichart">Thidaya Thitiapichart</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of additional magnesium oxide (MgO) was investigated by using the tungsten oxide supported on silica catalyst (WOx/SiO2) physically mixed with MgO in a weight ratio 1:1. The both fresh and spent catalysts were characterized by FT-Raman spectrometer, UV-Vis spectrometer, X-Ray diffraction (XRD), and temperature programmed oxidation (TPO). The results indicated that the additional MgO could enhance the conversion of trans-2-butene due to isomerization reaction. However, adding MgO would increase the amount of coke deposit on the WOx/SiO2 catalyst. The TPO profile presents two peaks when the WOx/SiO2 catalyst was physically mixed with MgO. The further peak was suggested to be coming from the coke precursor that could be produced by isomerization reaction of the undesired product. Then, the occurred coke precursor could deposit and form coke on the acid catalyst. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coke%20formation" title="coke formation">coke formation</a>, <a href="https://publications.waset.org/abstracts/search?q=metathesis" title=" metathesis"> metathesis</a>, <a href="https://publications.waset.org/abstracts/search?q=magnesium%20oxide" title=" magnesium oxide"> magnesium oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=physically%20mix" title=" physically mix "> physically mix </a> </p> <a href="https://publications.waset.org/abstracts/25495/influence-of-mgo-physically-mixed-with-tungsten-oxide-supported-silica-catalyst-on-coke-formation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25495.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">248</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4523</span> Production of Biodiesel Using Brine Waste as a Heterogeneous Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hilary%20Rutto">Hilary Rutto</a>, <a href="https://publications.waset.org/abstracts/search?q=Linda%20Sibali"> Linda Sibali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In these modern times, we constantly search for new and innovative technologies to lift the burden of our extreme energy demand. The overall purpose of biofuel production research is to source an alternative energy source to replace the normal use of fossil fuel as liquid petroleum products. This experiment looks at the basis of biodiesel production with regards to alternative catalysts that can be used to produce biodiesel. The key factors that will be addressed during the experiments will focus on temperature variation, catalyst additions to the overall reaction, methanol to oil ratio, and the impact of agitation on the reaction. Brine samples sources from nearby plants will be evaluated and tested thoroughly and the key characteristics of these brine samples analysed for the verification of its use as a possible catalyst in biodiesel production. The one factor at a time experimental approach was used in this experiment, and the recycle and reuse characteristics of the heterogeneous catalyst was evaluated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brine%20sludge" title="brine sludge">brine sludge</a>, <a href="https://publications.waset.org/abstracts/search?q=heterogenous%20catalyst" title=" heterogenous catalyst"> heterogenous catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel"> biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=one%20factor" title=" one factor "> one factor </a> </p> <a href="https://publications.waset.org/abstracts/130829/production-of-biodiesel-using-brine-waste-as-a-heterogeneous-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130829.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">171</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4522</span> Methanation Catalyst for Low CO Concentration</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hong-Fang%20Ma">Hong-Fang Ma</a>, <a href="https://publications.waset.org/abstracts/search?q=Cong-yi%20He"> Cong-yi He</a>, <a href="https://publications.waset.org/abstracts/search?q=Hai-Tao%20Zhang"> Hai-Tao Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei-Yong%20Ying"> Wei-Yong Ying</a>, <a href="https://publications.waset.org/abstracts/search?q=Ding-Ye%20Fang"> Ding-Ye Fang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A Ni-based catalyst supported by γ-Al2O3 was prepared by impregnation method, and the catalyst was used in a low CO and CO2 concentration methanation system. The effect of temperature, pressure and space velocity on the methanation reaction was investigated in an experimental fixed-bed reactor. The methanation reaction was operated at the conditions of 190-240°C, 3000-24000ml•g-1•h-1 and 1.5-3.5MPa. The results show that temperature and space velocity play important role on the reaction. With the increase of reaction temperature the CO and CO2 conversion increase and the selectivity of CH4 increase. And with the increase of the space velocity the conversion of CO and CO2 and the selectivity of CH4 decrease sharply. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coke%20oven%20gas" title="coke oven gas">coke oven gas</a>, <a href="https://publications.waset.org/abstracts/search?q=methanntion" title=" methanntion"> methanntion</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20bed" title=" fixed bed"> fixed bed</a>, <a href="https://publications.waset.org/abstracts/search?q=performance" title=" performance"> performance</a> </p> <a href="https://publications.waset.org/abstracts/7667/methanation-catalyst-for-low-co-concentration" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7667.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">402</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4521</span> Optimization of Biodiesel Production from Sunflower Oil Using Central Composite Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pascal%20Mwenge">Pascal Mwenge</a>, <a href="https://publications.waset.org/abstracts/search?q=Jefrey%20Pilusa"> Jefrey Pilusa</a>, <a href="https://publications.waset.org/abstracts/search?q=Tumisang%20Seodigeng"> Tumisang Seodigeng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current study investigated the effect of catalyst ratio and methanol to oil ratio on biodiesel production by using central composite design. Biodiesel was produced by transesterification using sodium hydroxide as a homogeneous catalyst, a laboratory scale reactor consisting of flat bottom flask mounts with a reflux condenser, and a heating plate was used to produce biodiesel. Key parameters, including time, temperature, and mixing rate was kept constant at 60 minutes, 60 <sup>o</sup>C and 600 RPM, respectively. From the results obtained, it was observed that the biodiesel yield depends on catalyst ratio and methanol to oil ratio. The highest yield of 50.65% was obtained at catalyst ratio of 0.5 wt.% and methanol to oil mole ratio 10.5. The analysis of variances of biodiesel yield showed the R Squared value of 0.8387. A quadratic mathematical model was developed to predict the biodiesel yield in the specified parameters ranges. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ANOVA" title="ANOVA">ANOVA</a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel"> biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=transesterification" title=" transesterification"> transesterification</a>, <a href="https://publications.waset.org/abstracts/search?q=central%20composite%20design" title=" central composite design"> central composite design</a> </p> <a href="https://publications.waset.org/abstracts/98851/optimization-of-biodiesel-production-from-sunflower-oil-using-central-composite-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98851.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">152</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=urban%20catalyst&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=urban%20catalyst&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=urban%20catalyst&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=urban%20catalyst&page=5">5</a></li> <li class="page-item"><a class="page-link" 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