Search results for: Mn2O3

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Mn2O3</title> <meta name="description" content="Search results for: Mn2O3"> <meta name="keywords" content="Mn2O3"> <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 ml-auto" 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class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Mn2O3"> <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> 3</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Mn2O3</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Electrochemical Performance of Al-Mn2O3 Based Electrode Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Noor%20Ul%20Ain%20Bhatti">Noor Ul Ain Bhatti</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Junaid%20Khan"> M. Junaid Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Javed%20Ahmad"> Javed Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Murtaza%20Saleem"> Murtaza Saleem</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahid%20M.%20Ramay"> Shahid M. Ramay</a>, <a href="https://publications.waset.org/abstracts/search?q=Saadat%20A.%20Siddiqi"> Saadat A. Siddiqi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Manganese oxide is being recently used as electrode material for rechargeable batteries. In this study, Al incorporated Mn<sub>2</sub>O<sub>3</sub> compositions were synthesized to study the effect of Al doping on electrochemical performance of host material. Structural studies were carried out using X-ray diffraction analysis to confirm the phase stability and explore the lattice parameters, crystallite size, lattice strain, density and cell volume. Morphology and composition were analyzed using field emission scanning electron microscope and energy dispersive X-ray spectroscopy, respectively. Dynamic light scattering analysis was performed to observe the average particle size of the compositions. FTIR measurements exhibit the O-Al-O and O-Mn-O and Al-O bonding and with increasing the concentration of Al, the vibrational peaks of Mn-O become sharper. An enhanced electrochemical performance was observed in compositions with higher Al content. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mn2O3" title="Mn2O3">Mn2O3</a>, <a href="https://publications.waset.org/abstracts/search?q=electrode%20materials" title=" electrode materials"> electrode materials</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20storage%20and%20conversion" title=" energy storage and conversion"> energy storage and conversion</a>, <a href="https://publications.waset.org/abstracts/search?q=electrochemical%20performance" title=" electrochemical performance"> electrochemical performance</a> </p> <a href="https://publications.waset.org/abstracts/63281/electrochemical-performance-of-al-mn2o3-based-electrode-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63281.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">367</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> Catalytic Combustion of Methane over Pd-Meox-CeO₂/Al₂O₃ (Me= Co or Ni) Catalysts</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Silviya%20Todorova">Silviya Todorova</a>, <a href="https://publications.waset.org/abstracts/search?q=Anton%20Naydenov"> Anton Naydenov</a>, <a href="https://publications.waset.org/abstracts/search?q=Ralitsa%20Velinova"> Ralitsa Velinova</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Larin"> Alexander Larin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Catalytic combustion of methane has been extensively investigated for emission control and power generation during the last decades. The alumina-supported palladium catalyst is widely accepted as the most active catalysts for catalytic combustion of methane. The activity of Pd/Al₂O₃ decreases during the time on stream, especially underwater vapor. The following order of activity in the reaction of complete oxidation of methane was established: Co₃O₄> CuO>NiO> Mn₂O₃> Cr₂O₃. It may be expected that the combination between Pd and these oxides could lead to the promising catalysts in the reaction of complete methane. In the present work, we investigate the activity of Pd/Al₂O₃ catalysts promoted with other metal oxides (MOx; M= Ni, Co, Ce). The Pd-based catalysts modified by metal oxide were prepared by sequential impregnation of Al₂O₃ with aqueous solutions of Me(NO₃)₂.6H₂O and Pd(NO₃)₂H₂O. All samples were characterized by X-ray diffraction (XRD), temperature-programmed reduction (TPR), and X-ray photoelectron spectroscopy (XPS). An improvement of activity was observed after modification with different oxides. The results demonstrate that the Pd/Al₂O₃ catalysts modified with Co and Ce by impregnation with a common solution of respective salts, exhibit the most promising catalytic activity for methane oxidation. Most probably, the presence of Co₃O₄ and CeO₂ on catalytic surface increases surface oxygen and therefore leads to the better reactivity in methane combustion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=methane%20combustion" title="methane combustion">methane combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=palladium" title=" palladium"> palladium</a>, <a href="https://publications.waset.org/abstracts/search?q=Co-Ce" title=" Co-Ce"> Co-Ce</a>, <a href="https://publications.waset.org/abstracts/search?q=Ni-Ce" title=" Ni-Ce"> Ni-Ce</a> </p> <a href="https://publications.waset.org/abstracts/110568/catalytic-combustion-of-methane-over-pd-meox-ceo2al2o3-me-co-or-ni-catalysts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110568.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">186</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> Sedimentology and Geochemistry of Carbonate Bearing-Argillites on the Southeastern Flank of Mount Cameroon, Likomba</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chongwain%20G.%20Mbzighaa">Chongwain G. Mbzighaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Christopher%20M.%20Agyingi"> Christopher M. Agyingi</a>, <a href="https://publications.waset.org/abstracts/search?q=Josepha-Forba-Tendo"> Josepha-Forba-Tendo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background and aim: Sedimentological, geochemical and petrographic studies were carried out on carbonate-bearing argillites outcropping at the southeastern flank of Mount Cameroon (Likomba) to determine the lithofacies and their associations, major element geochemistry and mineralogy. Methods: Major elements of the rocks were analyzed using XRF technique. Thermal analysis and thin section studies were carried out accompanied with the determination of insoluble components of the carbonates. Results: The carbonates are classed as biomicrites with siderite being the major carbonate mineral. Clay, quartz and pyrite constitute the major insoluble components of these rocks. Geochemical results depict a broad variation in their concentrations with silica and iron showing the highest concentrations and sodium and manganese with the least concentrations. Two factors were revealed with the following elemental associations, Fe2O3-MgO-Mn2O3 (72.56 %) and TiO2-SiO2-Al2O3-K2O (23.20%) indicating both Fe-enrichment, the subsequent formation of the siderite and the contribution of the sediments to the formation of these rocks. Conclusion: The rocks consist of cyclic iron-rich carbonates alternating with sideritic-shales and might have been formed as a result of variations in the sea conditions as well as variation in sediment influx resulting from transgression and regression sequences occurring in a shallow to slightly deep marine environments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sedimentology" title="sedimentology">sedimentology</a>, <a href="https://publications.waset.org/abstracts/search?q=geochemistry" title=" geochemistry"> geochemistry</a>, <a href="https://publications.waset.org/abstracts/search?q=petrography" title=" petrography"> petrography</a>, <a href="https://publications.waset.org/abstracts/search?q=iron%20carbonates" title=" iron carbonates"> iron carbonates</a>, <a href="https://publications.waset.org/abstracts/search?q=Likomba" title=" Likomba"> Likomba</a> </p> <a href="https://publications.waset.org/abstracts/22237/sedimentology-and-geochemistry-of-carbonate-bearing-argillites-on-the-southeastern-flank-of-mount-cameroon-likomba" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22237.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">444</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" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational 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Search results for: Mn2O3