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Sic Mixed Vpo Catalyst For The Partial Oxidation Of N Butane To Maleic Anhydride
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Book Synopsis SiC Mixed VPO Catalyst for the Partial Oxidation of N-butane to Maleic Anhydride by : A. H. Kababji
Download or read book SiC Mixed VPO Catalyst for the Partial Oxidation of N-butane to Maleic Anhydride written by A. H. Kababji and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Diluent Addition and Metal Support Interactions in Heterogeneous Catalysis by : Alaʼa Hamed Kababji
Download or read book Effects of Diluent Addition and Metal Support Interactions in Heterogeneous Catalysis written by Alaʼa Hamed Kababji and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: This work begins with an introduction to catalysis focusing on heterogeneous systems and surface science phenomena. A study on the partial oxidation reaction of n-butane to maleic anhydride (MA) is presented in the first part. MA supplies are barely adequate for market requirements due to continued strong demand. Only slight improvement in catalytic performance would be welcome in the industrial community. The vanadium phosphorus oxide (VPO) catalyst was used in this work. The reaction is highly exothermic and the need to properly support the catalyst, not only for good dispersion but adequate heat dissipation is of crucial importance. For this, alpha-SiC commercial powders were used in synthesizing the catalyst due to its high thermal conductivity. Up to 25% MA yields were obtained and the reaction temperature was lowered by up to 28% using SiC/VPO mixed catalysts. The second part of this work is focused on the Fischer-Tropsch synthesis (FTS) process using cobalt silica supported catalysts. The main objective is the production of synthetic ultra high purity jet fuel (JP5). This is a very timely topic given the energy issues our world is facing. Almost all aspects of the FTS process have been extensively studied, however the effects of calcination temperature and silica support structure on the catalyst performance are lacking in literature. The catalysts were prepared using various silica supports. The catalysts had different drying and calcination temperatures. It was found that lower support surface area and calcination temperature catalysts exhibited higher activity due to lower support cobalt phase interaction. Co/silica catalysts calcined at 573K showed the highest CO conversion and the lowest CH4 selectivity. Catalysts prepared with 300m2/g support surface area exhibited 79.5% C5+ selectivity due to higher reducibility and less metal support interaction. The properties and performance of various prepared catalysts in both VPO and Co/silica systems are characterized by FTIR, XRD, BET, GC and XPS techniques. Theoretical FTS deactivation by sintering calculations and SiC/VPO particle temperature gradient calculations are presented as well. Finally, conclusions and future work on improving the yield and selectivity and scaling up the bench top setups are also presented.
Book Synopsis Partial Oxidation of N-butane to Maleic Anhydride by : Ala'a H. Kababji
Download or read book Partial Oxidation of N-butane to Maleic Anhydride written by Ala'a H. Kababji and published by . This book was released on 2004 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Porous Silicon Carbide and Gallium Nitride by : Randall M. Feenstra
Download or read book Porous Silicon Carbide and Gallium Nitride written by Randall M. Feenstra and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porous Silicon Carbide and Gallium Nitride: Epitaxy, Catalysis, and Biotechnology Applications presents the state-of-the-art in knowledge and applications of porous semiconductor materials having a wide band gap. This comprehensive reference begins with an overview of porous wide-band-gap technology, and describes the underlying scientific basis for each application area. Additional chapters cover preparation, characterization, and topography; processing porous SiC; medical applications; magnetic ion behavior, and many more
Book Synopsis Development of News Methods for Synthesizing Reactive Nanostructured Vanadium Phosphate Catalysts for Partial Oxidation of N-butane to Maleic Anhydride by : Ali Asghar Rownaghi
Download or read book Development of News Methods for Synthesizing Reactive Nanostructured Vanadium Phosphate Catalysts for Partial Oxidation of N-butane to Maleic Anhydride written by Ali Asghar Rownaghi and published by . This book was released on 2007 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Selective Oxidation of N-butane to Maleic Anhydride Over Model Vanadium-phosphorus Oxide Catalysts by : Thomas Patrick Moser
Download or read book The Selective Oxidation of N-butane to Maleic Anhydride Over Model Vanadium-phosphorus Oxide Catalysts written by Thomas Patrick Moser and published by . This book was released on 1984 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparative Study of VPO Catalysts in the Oxidation of Butane to Maleic Anhydride by : Nishlan Govender
Download or read book A Comparative Study of VPO Catalysts in the Oxidation of Butane to Maleic Anhydride written by Nishlan Govender and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Physicochemical Characterization of Vanadium Phosphorus Oxide Catalyst for Selective Oxidation of N-Butane to Maleic Anhydride by : Ahmad Raslan Mat Hussin
Download or read book Synthesis and Physicochemical Characterization of Vanadium Phosphorus Oxide Catalyst for Selective Oxidation of N-Butane to Maleic Anhydride written by Ahmad Raslan Mat Hussin and published by . This book was released on 2006 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Study on N-Butane Partial Oxidation to Maleic Anhydride in a Solid Electrolyte Membrane Reactor by : Yinmei Ye
Download or read book Experimental Study on N-Butane Partial Oxidation to Maleic Anhydride in a Solid Electrolyte Membrane Reactor written by Yinmei Ye and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Selective Oxidation of N-butane to Maleic Anhydride by : Manuja Ramdeen
Download or read book The Selective Oxidation of N-butane to Maleic Anhydride written by Manuja Ramdeen and published by . This book was released on 2003 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Physico-chemical Properties of Nanosized Vanadium Phosphorus Oxide, and Its Use as Catalyst in Selective Oxidation of N-butane to Maleic Anhydride by : Nurul Suziana Nawi @ Mohamed
Download or read book Synthesis and Physico-chemical Properties of Nanosized Vanadium Phosphorus Oxide, and Its Use as Catalyst in Selective Oxidation of N-butane to Maleic Anhydride written by Nurul Suziana Nawi @ Mohamed and published by . This book was released on 2011 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation and Characterisation at Vanadium Phosphorus Oxide Catalysts for Butane Oxidation to Maleic Anhydride by : Raja Lafi Al-Otaibi
Download or read book Preparation and Characterisation at Vanadium Phosphorus Oxide Catalysts for Butane Oxidation to Maleic Anhydride written by Raja Lafi Al-Otaibi and published by . This book was released on 2010 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation and Characterisation of Vanadium Phosphorus Oxide Catalysts for Butane Oxidation to Maleic Anhydride by : Raja Lafi Al-Otaibi
Download or read book Preparation and Characterisation of Vanadium Phosphorus Oxide Catalysts for Butane Oxidation to Maleic Anhydride written by Raja Lafi Al-Otaibi and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis aims the study of new preparative routes to get catalyst precursors VOHPO4.0.5H2O with good catalytic performance for the selective oxidation of n-butane to maleic anhydride. The use of octane as co-solvent shows a significant effect on the morphology of VOHPO4.0.5H2O precursor which was prepared via three different routes. The reaction of VOPO4.2H2O with octane solvent shows the possibility of the intercalation of the octane solvent between the layers of VOPO4.2H2O. This can lead to the formation of VOHPO4.0.5H2O precursors with a new morphology after the reduction step using 1-butanol. In addition, the use of octane as co-solvent with 1-butanol leads to the formation of VOHPO4.0.5H 2O with a different XRD pattern and new morphology. Testing these samples shows that the samples with rosette morphology exhibit the highest conversion and selectivity compared with the new materials prepared. We demonstrate that the use of seed crystals of vanadium phosphate can have a dramatic influence on the morphology and phase identity of the precursor materials. VOHPO4.0.5H2O was prepared from VOPO 4.2H2O using 1- and 3-octanol, 2-butanol and 2-methyl-1-propanol as both solvent and reducing agent. With 1-octanol the reaction temperature was found to be crucial in obtaining a high yield of the precursor phase, and at temperatures ≥160°C a solution, containing V4+ ions formed in preference to VOHPO4.0.5H2O. However, VOHPO4.0.5H2O formation can be achieved by the addition of a small amount of V-P-O materials as seeds if carrying out the reduction process above this temperature. In contrast, when 3-octanol is used, VO(H 2PO4)2 is formed solely, but in the presence of a V-P-O seed significant amounts of VOHPO4.0.5H2O can also be formed. Studying the reaction time online shows that VO(H2PO 4)2 could be transformed to VOHPO4.0.5H2 O, which has been attempted previously without success. Finally, testing these samples under reaction conditions shows that they demonstrate high selectivity toward MA and good conversion compared to VO(H2PO4) 2. Vanadium phosphate catalysts have successfully been prepared in aqueous media using hydrogen. The catalysts precursors obtained were poorly crystalline VOHPO4.05H2O and a minor amount of an impurity detected by a reflection in the XRD pattern. Activating these materials for n-butane oxidation show low selectivity of MA (5%), which could be attributed to the presence of V(V) phases after activation.
Book Synopsis Hydrothermal Synthesis of Vanadium Phosphorus Oxide Catalysts for Selective Oxidation of N-butane to Maleic Anhydride by : Mohd. Hasbi Ab. Rahim
Download or read book Hydrothermal Synthesis of Vanadium Phosphorus Oxide Catalysts for Selective Oxidation of N-butane to Maleic Anhydride written by Mohd. Hasbi Ab. Rahim and published by . This book was released on 2006 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improved Kinetics of N-butane Oxidation to Maleic Anhydride by : Mauritio Müller
Download or read book Improved Kinetics of N-butane Oxidation to Maleic Anhydride written by Mauritio Müller and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Heterogeneously Catalysed Selective Oxidation of N-butane to Maleic Anhydride by : Michael John Davies
Download or read book The Heterogeneously Catalysed Selective Oxidation of N-butane to Maleic Anhydride written by Michael John Davies and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Preparation and Characterisation of Vanadium Phosphate Catalysts for the Selective Oxidation of N-butane to Maleic Anhydride by : Jonathan Keith Bartley
Download or read book The Preparation and Characterisation of Vanadium Phosphate Catalysts for the Selective Oxidation of N-butane to Maleic Anhydride written by Jonathan Keith Bartley and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: