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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 ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="rhenium" name="q" 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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> 11</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: rhenium</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Theoretical Method for Full Ab-Initio Calculation of Rhenium Carbide Compound</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.Rached">D.Rached</a>, <a href="https://publications.waset.org/abstracts/search?q=M.Rabah"> M.Rabah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> First principles calculations are carried out to investigate the structural, electronic, and elastic properties of the utraincompressible materials, namely, noble metal carbide of Rhenium carbide (ReC) in four phases, the rocksalt (NaCl-B1), zinc blende (ZB-B2), the tungsten carbide(Bh) (WC), and the nickel arsenide (NiAs-B8).The ground state properties such as the equilibrium lattice constant, elastic constants, the bulk modulus its pressure derivate, and the hardness of ReC in these phases are systematically predicted by calculations from first–principles. The corresponding calculated bulk modulus is comparable with that of diamond, especially for the B8 –type rhenium carbide (ReC), the incompressibility along the c axis is demonstrated to exceed the linear incompressibility of diamond. Our calculations confirm in the nickel arsenide (B8) structure the ReC is found to be stable with a large bulk modulus B=440 GPa and the tungsten carbide (WC) structure becomes the most more favourable with to respect B3 and B1 structures, which ReC- WC is meta-stable. Furthermore, the highest bulk modulus values in the zinc blende (B3), rock salt (B1), tungsten carbide (WC), and the nickel arsenide (B8) structures (294GPa, 401GPa, 415GPa and 447 GPa, respectively) indicates that ReC is a hard material, and is superhard compound H(B8)= 36 GPa compared with the H(diamond)=96 GPa and H(c BN)=63.10 GPa. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=FP-LMTO" title=" FP-LMTO"> FP-LMTO</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=elasticity" title=" elasticity"> elasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20pressure" title=" high pressure"> high pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties"> thermodynamic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=hard%20material" title=" hard material"> hard material</a> </p> <a href="https://publications.waset.org/abstracts/13995/theoretical-method-for-full-ab-initio-calculation-of-rhenium-carbide-compound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13995.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">445</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">10</span> Preparation and Biological Evaluation of 186/188Re-Chitosan for Radiosynovectomy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Ahmadi">N. Ahmadi</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Yousefnia"> H. Yousefnia</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Bahrami-Samani"> A. Bahrami-Samani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chitosan is a natural and biodegradable polysaccharide with special characteristic for application in intracavital therapy. 166Ho-chitosan has been reported for the treatment of hepatocellular carcinoma and RSV with promising results. The aim of this study was to prepare 186/188Re-chitosan for radiosynovectomy purposes and investigate the probability of its leakage from the knee joint. 186/188Re was produced by neutron irradiation of the natural rhenium in a research reactor. Chemical processing was performed to obtain (186/188Re)-NaReO4- according to the IAEA manual. A stock solution of chitosan was prepared by dissolving in 1 % acetic acid aqueous solution (10 mg/mL). 1.5 mL of this stock solution was added to the vial containing the activity and the mixture was stirred for 5 min in the room temperature. The radiochemical purity of the complex was checked by the ITLC method, showing the purity of higher than 98%. Distribution of the radiolabeled complex was determined after intra-articular injection into the knees of rats. Excellent retention was observed in the joint with approximately no activity in the other organs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chitosan" title="chitosan">chitosan</a>, <a href="https://publications.waset.org/abstracts/search?q=leakage" title=" leakage"> leakage</a>, <a href="https://publications.waset.org/abstracts/search?q=radiosynovectomy" title=" radiosynovectomy"> radiosynovectomy</a>, <a href="https://publications.waset.org/abstracts/search?q=rhenium" title=" rhenium "> rhenium </a> </p> <a href="https://publications.waset.org/abstracts/34358/preparation-and-biological-evaluation-of-186188re-chitosan-for-radiosynovectomy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34358.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">347</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">9</span> Exploring Photoreactive Coordination Compounds: The Role of Re Complexes in Ibuprofen Photosensitized Decomposition</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Emilia%20R.%20Serrano">Emilia R. Serrano</a>, <a href="https://publications.waset.org/abstracts/search?q=Pedro%20M.%20David%20Gara"> Pedro M. David Gara</a>, <a href="https://publications.waset.org/abstracts/search?q=Gustavo%20T.%20Ruiz"> Gustavo T. Ruiz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Water pollution is an urgent global issue, impacting not only the availability and quality of water for consumption but also the health and lifestyle of populations worldwide. One growing concern is the presence of pharmaceuticals in natural waters, which pose significant risks to both the environment and public health. These substances, even in trace amounts, can cause physiological effects that are often undetected due to insufficient monitoring. Among the many compounds of concern are caffeine, paracetamol, ibuprofen, and enrofloxacin, all of which have been detected in rivers across Argentina. These substances are part of a broader class of emerging pollutants (EPs), which also include chemicals from household and personal care products. The environmental dangers posed by EPs are substantial, particularly their effects on the biotic components of aquatic ecosystems. Bioaccumulation of these pollutants has been observed in various aquatic organisms, raising concerns about long-term ecological impacts. Additionally, continuous exposure to EPs has been linked to a range of harmful effects, including cytotoxicity, genotoxicity, apoptosis, and functional impairments in living organisms. More alarmingly, the prevalence of antibiotics in the environment contributes to the growing issue of antibiotic resistance, creating a significant global health crisis. Unfortunately, these pollutants often go unnoticed during routine water quality assessments, which underscores the need for innovative approaches to mitigate their impact. One promising solution lies in the use of transition metal coordination compounds as photosensitizers, which can help degrade EPs through photocatalytic processes. Transition metals like rhenium (Re) form stable complexes with organic ligands, and these Re(I) complexes (ReC) exhibit tunable photophysical and photochemical properties based on metal-ligand combinations. By focusing on bi-azinic ligands, we aim to optimize the behavior of Re(I) complexes, enhancing their efficiency as photosensitizers in the degradation of harmful pollutants. ReC molecules are of particular interest due to their excellent thermal and photochemical stability, as well as their ability to facilitate electron transfer and redox reactions. When activated by light, these complexes generate reactive species capable of breaking down toxic pollutants into less harmful byproducts. This photo-driven degradation process offers a sustainable and environmentally friendly approach to removing EPs from natural waters, reducing their impact on aquatic life and human health. The unique properties of ReC, such as their excited-state behavior and efficient energy transfer, make them highly suitable for photocatalytic applications aimed at mitigating water pollution. The methodology employed in this research integrates several techniques to explore the effectiveness of ReC in pollutant degradation. These include optoacoustic measurements, absorption and fluorescence spectroscopy, laser flash photolysis, and the use of a phoreactor to simulate real-world conditions. Our recent results showed that a ferrocene-rhenium complex with phenanthroline enhanced the photodegradation of ibuprofen under oxidizing conditions. While promising, further studies, such as HPLC, are needed to determine the exact nature of the degradation products and assess the efficiency of the process. Through this approach, this research aims to contribute to the development of efficient, green technologies for degrading emerging pollutants in natural waters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rhenium%20complexes" title="Rhenium complexes">Rhenium complexes</a>, <a href="https://publications.waset.org/abstracts/search?q=photosensitizers" title=" photosensitizers"> photosensitizers</a>, <a href="https://publications.waset.org/abstracts/search?q=emerging%20pollutants" title=" emerging pollutants"> emerging pollutants</a>, <a href="https://publications.waset.org/abstracts/search?q=Ibuprofen" title=" Ibuprofen"> Ibuprofen</a> </p> <a href="https://publications.waset.org/abstracts/196306/exploring-photoreactive-coordination-compounds-the-role-of-re-complexes-in-ibuprofen-photosensitized-decomposition" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/196306.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">31</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">8</span> The Strength and Metallography of a Bimetallic Friction Stir Bonded Joint between AA6061 and High Hardness Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Richard%20E.%20Miller">Richard E. Miller</a> </p> <p class="card-text"><strong>Abstract:</strong></p> 12.7-mm thick plates of 6061-T6511 aluminum alloy and high hardness steel (528 HV) were successfully joined by a friction stir bonding process using a tungsten-rhenium stir tool. Process parameter variation experiments, which included tool design geometry, plunge and traverse rates, tool offset, spindle tilt, and rotation speed, were conducted to develop a parameter set which yielded a defect free joint. Laboratory tensile tests exhibited yield stresses which exceed the strengths of comparable AA6061-to-AA6061 fusion and friction stir weld joints. Scanning electron microscopy and energy dispersive X-ray spectroscopy analysis also show atomic diffusion at the material interface region. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dissimilar%20materials" title="dissimilar materials">dissimilar materials</a>, <a href="https://publications.waset.org/abstracts/search?q=friction%20stir" title=" friction stir"> friction stir</a>, <a href="https://publications.waset.org/abstracts/search?q=welding" title=" welding"> welding</a>, <a href="https://publications.waset.org/abstracts/search?q=materials%20science" title=" materials science"> materials science</a> </p> <a href="https://publications.waset.org/abstracts/7198/the-strength-and-metallography-of-a-bimetallic-friction-stir-bonded-joint-between-aa6061-and-high-hardness-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7198.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">273</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">7</span> Determination of Mercury in Gold Ores by CVAAS Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ratna%20Siti%20Khodijah">Ratna Siti Khodijah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mirzam%20Abdurrachman"> Mirzam Abdurrachman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gold is recovered from gold ores. Within the ores, there are not only gold but also several types of precious metals. Copper, silver, and platinum group elements (ruthenium, rhodium, palladium, rhenium, osmium, and iridium) are metals commonly found in the ores. These metals combine to form an ore because they have the same properties. It is due to their position in periodic-system-of-elements are near to gold. However, the presence of mercury in every gold ore has not been mentioned, even though it is located right next to gold in the periodic-system-of-elements and they are located in the same block, d-block. Thus, it is possible that mercury is contained in the ores. Moreover, the elements of the same group with mercury—zinc and cadmium—sometimes can be found in the ores. It is suspected that mercury can not be detected because the processing of gold ores usually using fire assay method. Before the ores melting, mercury would evaporate because it has the lowest boiling point of all precious metal in the ores. Therefore, it suggested doing research on the presence of mercury in gold ores by CVAAS method. The results of this study would obtain the amount of mercury in gold ores that should be purified. So it can be produced economically if possible. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boiling%20point" title="boiling point">boiling point</a>, <a href="https://publications.waset.org/abstracts/search?q=d-block" title=" d-block"> d-block</a>, <a href="https://publications.waset.org/abstracts/search?q=fire%20assay" title=" fire assay"> fire assay</a>, <a href="https://publications.waset.org/abstracts/search?q=precious%20metal" title=" precious metal"> precious metal</a> </p> <a href="https://publications.waset.org/abstracts/72809/determination-of-mercury-in-gold-ores-by-cvaas-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72809.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">347</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">6</span> Identification of Rare Metals in Maiganga Coal Nigeria Using ICP OES Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rabiatu%20Adamu%20Saleh">Rabiatu Adamu Saleh</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullahi%20S.%20B.%20Gimba"> Abdullahi S. B. Gimba</a>, <a href="https://publications.waset.org/abstracts/search?q=Adekunle%20Akanni%20Adeleke"> Adekunle Akanni Adeleke</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Usman"> Ahmed Usman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One fossil fuel that is utilized to generate electricity is burned coal, which is a nonrenewable energy source. A lot of individuals steer clear of coal because they don't understand its significance. It is considered to contain a notable amount of rare metals, which serve as basic materials in the production of renewable energy. The occurrence of rare metals in Garin Maiganga Coal Deposit was analyzed using ICP OES, 16 rare metals were determined in the coal: Cesium, Gold, Platinum, Osmium, Iridium, Palladium, Ruthenium, Rhodium, Tellurium, Rhenium, Indium, Tantalum, Tungsten, Gallium, Lithium, and Cobalt. The results indicated the occurrence of Cs in all three decarbonized coal ash. The objective of this study is to increase the amount of data that scientists need before beginning metal recovery experiments. Inductively coupled plasma optical emission spectroscopy is the main focus of this work as it will be used to measure the concentration of these metals in Garin Maiganga coal resource in Gombe, Nigeria. In order to do this, the contents of rare metals were detected, and the economic values of the elements were looked into. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coal" title="coal">coal</a>, <a href="https://publications.waset.org/abstracts/search?q=Maiganga" title=" Maiganga"> Maiganga</a>, <a href="https://publications.waset.org/abstracts/search?q=rare%20metals" title=" rare metals"> rare metals</a>, <a href="https://publications.waset.org/abstracts/search?q=ICP%20OES" title=" ICP OES"> ICP OES</a> </p> <a href="https://publications.waset.org/abstracts/196452/identification-of-rare-metals-in-maiganga-coal-nigeria-using-icp-oes-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/196452.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">24</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">5</span> A Comprehensive Approach Towards Time-Resolved Spectroscopy in Two-dimensional Material System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arslan%20Usman">Arslan Usman</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Sarau"> George Sarau</a>, <a href="https://publications.waset.org/abstracts/search?q=Silke%20Christiansen"> Silke Christiansen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Two-dimensional (2D) semiconductors have opened new horizons for future optoelectronic applications through efficient light-matter and many-body interactions at a quantum level. Anisotropic 2D materials like rhenium disulphide (ReS₂) present a new class of materials with polarized excitonic resonances. Here, we demonstrate a WSe₂ /ReS₂ heterostructure which exhibits a significant photoluminescence quenching at room temperature as well as at low temperatures. This indicates an efficient charge transfer due to the electron-hole exchange interaction. The band alignment of the two materials suggests that electrons optically injected into WSe₂ are transferred to ReS₂. Polarization-resolved luminescence measurements reveal two additional polarization-sensitive exciton peaks in ReS₂ in addition to the two conventional exciton resonances X1 and X2. Furthermore, for ReS₂ we observe two charged excitons (trions) with binding energies of 18 meV and 15 meV, respectively. The bi-excitons of WSe₂ become polarization sensitive and inherit polarizing properties from the underlying ReS₂ layers, which act as patterned substrates for the top layer. Overall, our findings provide a better understanding of optical signatures in 2D anisotropic materials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anisotropic%202D%20materials" title="anisotropic 2D materials">anisotropic 2D materials</a>, <a href="https://publications.waset.org/abstracts/search?q=band%20alignment" title=" band alignment"> band alignment</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20anisotropy" title=" optical anisotropy"> optical anisotropy</a>, <a href="https://publications.waset.org/abstracts/search?q=charged%20exciton" title=" charged exciton"> charged exciton</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescence" title=" photoluminescence"> photoluminescence</a> </p> <a href="https://publications.waset.org/abstracts/198771/a-comprehensive-approach-towards-time-resolved-spectroscopy-in-two-dimensional-material-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/198771.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">1</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">4</span> Strategy for Energy Industry and Oil Complex of Russia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Young%20Sik%20Kim">Young Sik Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Tae%20Kwon%20Ha"> Tae Kwon Ha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Russia was one of the world’s leading mineral- producing countries. In 2012, Russia was ranked among the world’s leading producers or was a leading regional producer of such mineral commodities as aluminum, arsenic, asbestos, bauxite, boron, cadmium, cement, coal, cobalt, copper, diamond, fluorspar, gold, iron ore, lime, magnesium compounds and metals, mica (flake, scrap, and sheet), natural gas, nickel, nitrogen, oil shale, palladium, peat, petroleum, phosphate, pig iron, platinum, potash, rhenium, silicon, steel, sulfur, titanium sponge, tungsten, and vanadium. Russia has large reserves of a variety of mineral resources and undoubtedly will continue to be one of the world’s leading mineral producers. Although the country’s economy is expected to grow in 2012, some problems are likely to remain. In 2011, the Russian economy returned to economic growth after the significant decline in 2010. According to some analysts, however, the recovery of 2011 did not appear sufficiently vigorous to carry the country’s strong economic growth into the next decade. Even in the sectors of the economy where the country is among the world leaders (ferrous metals, gas, petroleum), Russian industry has obsolete plants and equipment, a slow rate of innovation, and low labor productivity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Russia" title="Russia">Russia</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20resources" title=" energy resources"> energy resources</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20growth" title=" economic growth"> economic growth</a>, <a href="https://publications.waset.org/abstracts/search?q=strategy" title=" strategy"> strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=oil%20complex" title=" oil complex"> oil complex</a> </p> <a href="https://publications.waset.org/abstracts/26117/strategy-for-energy-industry-and-oil-complex-of-russia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26117.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">605</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">3</span> The Study and the Use of the Bifunctional Catalyst Pt/Re for Obtaining High Octane Number of the Gasoline</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Menouar%20Hanafi">Menouar Hanafi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The original function of the process of platforming is to develop heavy naphtha (HSRN), coming from the atmospheric unit of distillation with a weak octane number (NO=44), to obtain a mixture of fuels â number octane raised by catalytically supporting specific groups of chemical reactions. The installation is divided into two sections: Section hydrobon. Section platforming. The rafinat coming from the bottom of column 12C2 to feed the section platforming, is divided into two parts whose flows are controlled and mixed with gas rich in hydrogen. Bottom of the column, we obtain stabilized reformat which is aspired by there pump to ensure the heating of the column whereas a part is sent towards storage after being cooled by the air cooler and the condenser. In catalytic catalyst of reforming, there is voluntarily associated a hydrogenating function-dehydrogenating, brought by platinum deposited, with an acid function brought by the alumina support (Al 2 0 3). The mechanism of action of this bifunctional catalyst depends on the severity of the operation, of the quality of the load and the type of catalyst. The catalyst used in the catalytic process of reforming is a very elaborate bifunctional catalyst whose performances are constantly improved thanks to the experimental research supported on an increasingly large comprehension of the phenomena. The American company Universel 0i1 petroleum (UOP) marketed several series of bimetallic catalysts such as R16, R20, R30, and R62 consisted Platinum/Rhenium on an acid support consisted the alumina added with a halogenous compound (chlorine). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=platforming" title="platforming">platforming</a>, <a href="https://publications.waset.org/abstracts/search?q=amelioration" title=" amelioration"> amelioration</a>, <a href="https://publications.waset.org/abstracts/search?q=octane%20number" title=" octane number"> octane number</a>, <a href="https://publications.waset.org/abstracts/search?q=catalyst" title=" catalyst"> catalyst</a> </p> <a href="https://publications.waset.org/abstracts/21579/the-study-and-the-use-of-the-bifunctional-catalyst-ptre-for-obtaining-high-octane-number-of-the-gasoline" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21579.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">390</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">2</span> Transformation of Aluminum Unstable Oxyhydroxides in Ultrafine α-Al2O3 in Presence of Various Seeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Kuchukhidze">T. Kuchukhidze</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Jalagonia"> N. Jalagonia</a>, <a href="https://publications.waset.org/abstracts/search?q=Z.%20Phachulia"> Z. Phachulia</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Chedia"> R. Chedia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ceramic obtained on the base of aluminum oxide has wide application range, because it has unique properties, for example, wear-resistance, dielectric characteristics, exploitation ability at high temperatures and in corrosive atmosphere. Low temperature synthesis of α-Al2O3 is energo-economical process and it is actual for developing technologies of corundum ceramics fabrication. In the present work possibilities of low temperature transformation of oxyhydroxides in α-Al2O3, during a presence of small amount of rare–earth elements compounds (also Th, Re), have been discussed. Aluminium unstable oxyhydroxides have been obtained by hydrolysis of aluminium isopropoxide, nitrates, sulphate, chloride in alkaline environment at 80-90ºC tempertures. β-Al(OH)3 has been received from aluminium powder by ultrasonic development. Drying of oxyhydroxide sol has been conducted with presence of various types seeds, which amount reaches 0,1-0,2% (mas). Neodymium, holmium, thorium, lanthanum, cerium, gadolinium, disprosium nitrates and rhenium carbonyls have been used as seeds and they have been added to the sol specimens in amount of 0.1-0.2% (mas) calculated on metals. Annealing of obtained gels is carried out at 70 – 1100ºC for 2 hrs. The same specimen transforms in α-Al2O3 at 1100ºC. At this temperature in case of presence of lanthanum and gadolinium transformation takes place by 70-85%. In case of presence of thorium stabilization of γ-and θ-phases takes place. It is established, that thorium causes inhibition of α-phase generation at 1100ºC, at the time in all other doped specimens α-phase is generated at lower temperatures (1000-1050ºC). During the work the following devices have been used: X-ray difractometer DRON-3M (Cu-Kα, Ni filter, 2º/min), High temperature vacuum furnace OXY-GON, electronic scanning microscopes Nikon ECLIPSE LV 150, NMM-800TRF, planetary mill Pulverisette 7 premium line, SHIMADZU Dynamic Ultra Micro Hardness Tester, DUH-211S, Analysette 12 Dyna sizer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-Alumina" title="α-Alumina">α-Alumina</a>, <a href="https://publications.waset.org/abstracts/search?q=combustion" title=" combustion"> combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20transformation" title=" phase transformation"> phase transformation</a>, <a href="https://publications.waset.org/abstracts/search?q=seeding" title=" seeding"> seeding</a> </p> <a href="https://publications.waset.org/abstracts/23629/transformation-of-aluminum-unstable-oxyhydroxides-in-ultrafine-a-al2o3-in-presence-of-various-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23629.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">401</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">1</span> Alteration Quartz-Kfeldspar-Apatite-Molybdenite at B Anomaly Prospection with Artificial Neural Network to Determining Molydenite Economic Deposits in Malala District, Western Sulawesi </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Lutfi">Ahmad Lutfi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolas%20Dhega"> Nikolas Dhega</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Malala deposit in northwest Sulawesi is the only known porphyry molybdenum and the only source for rhenium, occurrence in Indonesia. The neural network method produces results that correspond very closely to those of the knowledge-based fuzzy logic method and weights of evidence method. This method required data of solid geology, regional faults, airborne magnetic, gamma-ray survey data and GIS data. This interpretation of the network output fits with the intuitive notion that a prospective area has characteristics that closely resemble areas known to contain mineral deposits. Contrasts with the weights of evidence and fuzzy logic methods, where, for a given grid location, each input-parameter value automatically results in an increase in the prospective estimated. Malala District indicated molybdenum anomalies in stream sediments from in excess of 15 km2 were obtained, including the Takudan Fault as most prominent structure with striking 40̊ to 60̊ over a distance of about 30 km and in most places weakly at anomaly B, developed over an area of 4 km2, with a ‘shell’ up to 50 m thick at the intrusive contact with minor mineralization occurring in the Tinombo Formation. Series of NW trending, steeply dipping fracture zones, named the East Zone has an estimated resource of 100 Mt at 0.14% MoS2 and minimum target of 150 Mt 0.25%. The Malala porphyries occur as stocks and dykes with predominantly granitic, with fluorine-poor class of molybdenum deposits and belongs to the plutonic sub-type. Unidirectional solidification textures consisting of subparallel, crenulated layers of quartz that area separated by layers of intrusive material textures. The deuteric nature of the molybdenum mineralization and the dominance of carbonate alteration.The nature of the Stage I with alteration barren quartz K‐feldspar; and Stage II with alteration quartz‐K‐feldspar‐apatite-molybdenite veins combined with the presence of disseminated molybdenite with primary biotite in the host intrusive. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=molybdenite" title="molybdenite">molybdenite</a>, <a href="https://publications.waset.org/abstracts/search?q=Malala" title=" Malala"> Malala</a>, <a href="https://publications.waset.org/abstracts/search?q=porphyries" title=" porphyries"> porphyries</a>, <a href="https://publications.waset.org/abstracts/search?q=anomaly%20B" title=" anomaly B"> anomaly B</a> </p> <a href="https://publications.waset.org/abstracts/86066/alteration-quartz-kfeldspar-apatite-molybdenite-at-b-anomaly-prospection-with-artificial-neural-network-to-determining-molydenite-economic-deposits-in-malala-district-western-sulawesi" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86066.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">155</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" 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