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The Selective Oxidation And Ammoxidation Of Propene Over Bismuth Molybdate Catalysts Containing Varying Concentration Of Iron
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Book Synopsis The Selective Oxidation and Ammoxidation of Propene Over Bismuth Molybdate Catalysts Containing Varying Concentration of Iron by : Andrew James Watts
Download or read book The Selective Oxidation and Ammoxidation of Propene Over Bismuth Molybdate Catalysts Containing Varying Concentration of Iron written by Andrew James Watts and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Selective Oxidation and Ammoxidation of Propene Over Bismuth, Iron and Molybdenum Based Catalysts by : Andrew James Watts
Download or read book The Selective Oxidation and Ammoxidation of Propene Over Bismuth, Iron and Molybdenum Based Catalysts written by Andrew James Watts and published by . This book was released on 2008 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toward a Molecular Level Understanding of Mixed Metal Oxide Oxidation Catalysts by : Andrew Getsoian
Download or read book Toward a Molecular Level Understanding of Mixed Metal Oxide Oxidation Catalysts written by Andrew Getsoian and published by . This book was released on 2013 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The selective oxidation and ammoxidation of light olefins comprises a 5 million ton per year industry, and is responsible for making possible products from nitrile rubber to Plexiglas to acrylic paint. The industrial catalyst of choice for such reactions is based on bismuth molybdate, and was first patented in the 1950s. In the intervening decades, a significant body of research has been done on bismuth molybdate-based catalysts, and yet a surprising amount is still not known about how these catalysts work. This Thesis has focused primarily on developing new methods for studying bismuth molybdates and related catalysts in order to gain new insight into the means by which the physical and electronic structures of the active sites in these catalysts give rise to their catalytic activity. The mechanism by which propene is oxidized on the (010) surface of Bi2Mo3O12 has been investigated using the RPBE+U variety of density functional theory (DFT). The location of the active site was determined, and the calculated barrier for the rate-determining step at this site found to be in good agreement with experimental results. Calculations revealed the essential roles of bismuth and molybdenum in providing the geometric and electronic structure responsible for catalytic activity at the active site, and suggested that catalytic activity could be further enhanced by substitution with a more reducible element. In order to accurately model substitution of an additional reducible element in to Bi2Mo3O12 using DFT, more sophisticated approaches than RPBE+U were required. Two more advanced density functionals, M06-L and HSE, were examined. The HSE functional was found to be too expensive for practical use on extended systems like bismuth molybdate catalysts. The accuracy of the M06-L functional for lattice constants and geometries, reaction energies and barriers, electronic structures, and non-covalent interactions was investigated, and compared results from the RPBE+U method. The M06-L functional was found to be superior to RPBE+U for lattice constants, reaction energies, and non-covalent interactions, and as good as or better than RPBE+U for electronic structures. Use of the M06-L functional was therefore determined to be preferable to use of RPBE+U for use in the study of substituted bismuth molybdate catalysts. Calculations employing the M06-L functional were combined with physical characterization using diffuse reflectance UV-VIS, x-ray photoelectron, and x-ray near edge absorption spectroscopies in order to understand the effect of substitution of vanadium for molybdenum on the activation energy for propene oxidation in catalysts of formula Bi1-x/3V1-xMoxO4. In these catalysts, substitution of vanadium for molybdenum has been observed to lower the apparent activation barrier for propene oxidation. It was found that the lower activation barrier for propene oxidation over mixed vanadate-molybdate catalysts is a consequence of the smaller difference between the catalyst conduction band edge energy and the energy level of the highest occupied molecular orbital in propene. The lower conduction band edge energy in mixed vanadate-molybdate catalysts is related to the energies of and degrees of mixing between the V 3d and Mo 4d orbitals comprising the conduction band. Both of these observations suggest general principles that may be of relevance to a variety of mixed metal oxide catalyst systems. An improved procedure for synthesizing bismuth molybdate and bismuth vanadate catalysts was also developed. This procedure involved a two step templating process: a structured mesoporous carbon was templated from KIT-6 or MCM-48 mesoporous silica, and the structured mesoporous carbon in turn used as a template during synthesis of the metal oxide catalyst. Catalysts produced by the double templating process had surface areas of 14-17 m2/g, a large improvement on the
Download or read book Bismuth written by Ying Zhou and published by BoD – Books on Demand. This book was released on 2018-06-20 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bismuth (Bi) is a post-transition metal element with the atomic number of 83, which belongs to the pnictogen group elements in Period 6 in the elemental periodic table. As a heavy metal, the hazard of Bi is unusually low in contrast to its neighbors Pb and Sb. This property, along with other typical characteristics like strong diamagnetism and low thermal conductivity, makes Bi attractive in industrial applications. There are more than 100 commercial bismuth products, from pharmaceutical to industrial catalysts. Based on the wide applications of Bi materials, this book goes further and mainly focuses on the potential uses of Bi-based materials, which consist of nine chapters. In addition, a special chapter concerning the defect in bismuth is also presented.
Book Synopsis Advances In Catalyst Design, Vol 2: Proceedings Of The 2nd Workshop On Catalyst Design by : Mauro Graziani
Download or read book Advances In Catalyst Design, Vol 2: Proceedings Of The 2nd Workshop On Catalyst Design written by Mauro Graziani and published by World Scientific. This book was released on 1993-09-30 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop organized by the international centre for science and technology provided an occasion for researchers active both in homogeneous and heterogeneous catalysis to meet and look for common interpretations and a common language.
Book Synopsis Synthetic and Spectroscopic Advances in the Selective Oxidation of Propylene Over Bismuth Molybdate-based Catalysts by : Paul Sprenger
Download or read book Synthetic and Spectroscopic Advances in the Selective Oxidation of Propylene Over Bismuth Molybdate-based Catalysts written by Paul Sprenger and published by . This book was released on 2018 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Vapour Phase Catalytic Oxidation of 2- Methylpropene Over Bismuth Molybdate Catalysts by : David Wen-Sun Ko
Download or read book Vapour Phase Catalytic Oxidation of 2- Methylpropene Over Bismuth Molybdate Catalysts written by David Wen-Sun Ko and published by . This book was released on 1971 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Oxidation of Propylene Over Gamma Bismuth Molybdate by : Brian D. Dejong
Download or read book Selective Oxidation of Propylene Over Gamma Bismuth Molybdate written by Brian D. Dejong and published by . This book was released on 1985 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ammoxidation of Propene Over Iron Promoted Bismuth Molybdate for the Production of Acrylonitrile by : Kgolole David Maripane
Download or read book Ammoxidation of Propene Over Iron Promoted Bismuth Molybdate for the Production of Acrylonitrile written by Kgolole David Maripane and published by . This book was released on 2001 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis of supported bismuth molybdate catalyst and the application in selective oxidation of propylene to acrolein by : Duc Duc Truong
Download or read book Synthesis of supported bismuth molybdate catalyst and the application in selective oxidation of propylene to acrolein written by Duc Duc Truong and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bismuth Molybdate Catalysts for the Partial Oxidation of Propylene by : Thomas Peter Snyder
Download or read book Bismuth Molybdate Catalysts for the Partial Oxidation of Propylene written by Thomas Peter Snyder and published by . This book was released on 1988 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of Catalysis by : István T. Horváth
Download or read book Encyclopedia of Catalysis written by István T. Horváth and published by Wiley-Interscience. This book was released on 2003 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis, the speeding up of a chemical reaction by a substance which itself does not react, is vital not only to the chemical process industry but also to life itself. The six volume Encyclopedia of Catalysis is the definitive A-to-Z reference work covering the most significant aspects of homogenous, heterogeneous, asymmetric, biomimetic, and biological catalysis. Available both on-line and in print, the state-of-the-art Encyclopedia encompasses the principles of catalysis; the scope of catalytic reactions; the preparation, characterization, and use of catalysts (including catalytic technology); the modeling of catalytic processes; and related reaction engineering techniques. The logical organization of this seminal work renders the text easily accessible to both process personnel and those involved in basic and applied research and development. For more information regarding the online edition, please visit Wiley InterScience at www.mrw.interscience.wiley.com/enccat
Book Synopsis Metal Oxides in Heterogeneous Catalysis by : Jacques C. Vedrine
Download or read book Metal Oxides in Heterogeneous Catalysis written by Jacques C. Vedrine and published by Elsevier. This book was released on 2018-01-11 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxides in Heterogeneous Catalysis is an overview of the past, present and future of heterogeneous catalysis using metal oxides catalysts. The book presents the historical, theoretical, and practical aspects of metal oxide-based heterogeneous catalysis. Metal Oxides in Heterogeneous Catalysis deals with fundamental information on heterogeneous catalysis, including reaction mechanisms and kinetics approaches.There is also a focus on the classification of metal oxides used as catalysts, preparation methods and touches on zeolites, mesoporous materials and Metal-organic frameworks (MOFs) in catalysis. It will touch on acid or base-type reactions, selective (partial) and total oxidation reactions, and enzymatic type reactions The book also touches heavily on the biomass applications of metal oxide catalysts and environmentally related/depollution reactions such as COVs elimination, DeNOx, and DeSOx. Finally, the book also deals with future trends and prospects in metal oxide-based heterogeneous catalysis. Presents case studies in each chapter that provide a focus on the industrial applications Includes fundamentals, key theories and practical applications of metal oxide-based heterogeneous catalysis in one comprehensive resource Edited, and contributed, by leading experts who provide perspectives on synthesis, characterization and applications
Book Synopsis The Chemical Aspects of Selecting Catalysts for Heterogenously Catalyzed Selective Oxidation and Ammoxidation of Propene by :
Download or read book The Chemical Aspects of Selecting Catalysts for Heterogenously Catalyzed Selective Oxidation and Ammoxidation of Propene written by and published by . This book was released on 1982 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bismuth Molybdate-Based Catalysts for Selective Oxidation of Hydrocarbons by : Minh Thang Le
Download or read book Bismuth Molybdate-Based Catalysts for Selective Oxidation of Hydrocarbons written by Minh Thang Le and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Oxidation of Methanol Over Iron Molybdate Catalysts by : Matthew Peter House
Download or read book Selective Oxidation of Methanol Over Iron Molybdate Catalysts written by Matthew Peter House and published by . This book was released on 2007 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Petroleum Chemistry, U.S.S.R. written by and published by . This book was released on 1968 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: