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Author : Y. V. Belokopytov
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 ( download)
Download or read book Mechanism of the Catalytic Oxidation Reaction of Propylene to Acrolein written by Y. V. Belokopytov and published by . This book was released on 1980 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hamzah Fansuri
Publisher :
ISBN 13 :
Total Pages : 382 pages
Book Rating : 4.:/5 (271 download)
Download or read book Catalytic Partial Oxidation of Propylene to Acrolein written by Hamzah Fansuri and published by . This book was released on 2005 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reduction-reoxidation of bismuth molybdate is controlled by the diffusion of oxygen ions in the lattice, because the reduction sites do not have to be adjacent to the oxidation sites. The oxygen diffusion rate is in turn controlled by how mobile the lattice oxygen ions are. Hence, the mobile oxygen ions discussed earlier control the catalyst activity in catalysing the reaction of propylene partial oxidation. The examination of several reaction mechanism models has given further evidence that the propylene partial oxidation to acrolein occurs via the redox mechanism. In this mechanism, the rate of acrolein formation depends on the degree of fully oxidised sites in the bismuth molybdate. The oxidised sites affect the apparent reaction orders in propylene and oxygen and thus control the kinetics of partial oxidation of propylene to acrolein. The more easily the reduced catalysts are reoxidised, the more active the catalysts in converting propylene to acrolein. A set of reaction steps has been proposed, which adequately reassembles the reaction mechanism. Side product reactions are also identified and included in the mechanisms. The present thesis has revealed a much detailed insight into the role of lattice oxygen in the catalytic partial oxidation of propylene to acrolein over bismuth molybdates and established the relationship between structure and activity and selectivity of the catalyst. This work has laid a foundation for future catalyst design to be based on structural knowledge of the catalysts.
Author : Linlin Yang
Publisher :
ISBN 13 :
Total Pages : 402 pages
Book Rating : 4.:/5 (819 download)
Download or read book An ASPEN Plus\U+2122\ Based Modelling Study of Acrolein Formation and Recovery Processes written by Linlin Yang and published by . This book was released on 2004 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acrolein, which has wide industrial applications, can be produced by catalytic partial oxidation of propylene. The Centre for Fuels and Energy has been undertaking an R&D program to develop an Australian technology to produce acrolein. The overall aim of this work is to develop computerised models to satisfactorily describe the kinetics of the propylene catalytic oxidation and the whole acrolein production process. For this purpose, the commercial software, ASPEN Plus\U+2122\, has been employed in the present study. Two kinetic models using ASPEN Plus, Models A and B, have been developed to compute the production rates of acrolein and other by-products during propylene partial oxidation over both (Mo-Pr-Bi) and (Bi-Mo) catalysts, respectively, based on the kinetics reported in the literature. Both models successfully describe the propylene oxidation reactions supported by a good agreement between the simulation results and experimental data. Model A suggests that the reaction scheme of catalytic oxidation of propylene over the (Mo-Pr-Bi) catalyst consists of six reactions, namely, the formation of acrolein, acetaldehyde, acetone and carbon dioxide from parallel oxidation of propylene, and secondary oxidation of acrolein and acetaldehyde to carbon dioxide. Model B, developed for the (Bi-Mo) catalyst, shows that the reaction scheme only includes three parallel propylene oxidation reactions with acrolein, acetaldehyde and carbon dioxide being the products. By analysing the predicted reaction schemes and the selectivities of various products, two mechanisms of the propylene catalytic oxidation reaction are hypothesised for the two catalysts, respectively, further revealing the different performances of the corresponding catalysts.
Author : Linlin Yang
Publisher :
ISBN 13 :
Total Pages : 402 pages
Book Rating : 4.:/5 (224 download)
Download or read book An ASPEN PlusǾ̊ Based Modelling Study of Acrolein Formation and Recovery Processes written by Linlin Yang and published by . This book was released on 2004 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acrolein, which has wide industrial applications, can be produced by catalytic partial oxidation of propylene. The Centre for Fuels and Energy has been undertaking an R&D program to develop an Australian technology to produce acrolein. The overall aim of this work is to develop computerised models to satisfactorily describe the kinetics of the propylene catalytic oxidation and the whole acrolein production process. For this purpose, the commercial software, ASPEN PlusǾ̊, has been employed in the present study. Two kinetic models using ASPEN Plus, Models A and B, have been developed to compute the production rates of acrolein and other by-products during propylene partial oxidation over both (Mo-Pr-Bi) and (Bi-Mo) catalysts, respectively, based on the kinetics reported in the literature. Both models successfully describe the propylene oxidation reactions supported by a good agreement between the simulation results and experimental data. Model A suggests that the reaction scheme of catalytic oxidation of propylene over the (Mo-Pr-Bi) catalyst consists of six reactions, namely, the formation of acrolein, acetaldehyde, acetone and carbon dioxide from parallel oxidation of propylene, and secondary oxidation of acrolein and acetaldehyde to carbon dioxide. Model B, developed for the (Bi-Mo) catalyst, shows that the reaction scheme only includes three parallel propylene oxidation reactions with acrolein, acetaldehyde and carbon dioxide being the products. By analysing the predicted reaction schemes and the selectivities of various products, two mechanisms of the propylene catalytic oxidation reaction are hypothesised for the two catalysts, respectively, further revealing the different performances of the corresponding catalysts.
Author : Jens K. Nørskov
Publisher : John Wiley & Sons
ISBN 13 : 1118888952
Total Pages : 228 pages
Book Rating : 4.1/5 (188 download)
Download or read book Fundamental Concepts in Heterogeneous Catalysis written by Jens K. Nørskov and published by John Wiley & Sons. This book was released on 2014-10-27 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on a graduate course and suitable as a primer for any newcomer to the field, this book is a detailed introduction to the experimental and computational methods that are used to study how solid surfaces act as catalysts. Features include: First comprehensive description of modern theory of heterogeneous catalysis Basis for understanding and designing experiments in the field Allows reader to understand catalyst design principles Introduction to important elements of energy transformation technology Test driven at Stanford University over several semesters
Author : C. Sola
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 ( download)
Download or read book Catalytic Oxidation of Propene to Acrylic Acid and Acrolein written by C. Sola and published by . This book was released on 1980 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Adam Bielanski
Publisher : CRC Press
ISBN 13 : 1482293285
Total Pages : 489 pages
Book Rating : 4.4/5 (822 download)
Download or read book Oxygen in Catalysis written by Adam Bielanski and published by CRC Press. This book was released on 1990-11-29 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description of catalytic systems commonly used as model systems in the laboratory and as industrial catalysts in large-scale operations, and a discussion of the mechanisms operating in these reactions. Attempts to describe the elementary steps by quantum chemical methods are also shown, as are rec
Author : D. J. Hucknall
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (41 download)
Download or read book Selective Oxidation of Hydrocarbons written by D. J. Hucknall and published by . This book was released on 1974 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Juan R. Labastida-Bardales
Publisher :
ISBN 13 :
Total Pages : 327 pages
Book Rating : 4.:/5 (639 download)
Download or read book Oxidation of Propylene to Acrolein Over a Copper-molybdena Catalyst written by Juan R. Labastida-Bardales and published by . This book was released on 1990 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chunli Zhao
Publisher :
ISBN 13 : 9780549279174
Total Pages : 213 pages
Book Rating : 4.2/5 (791 download)
Download or read book Operando Spectroscopic and Kinetic Study of the Selective Oxidation of Propylene to Acrolein Over Well-defined Supported Vanadium Oxide Catalysts written by Chunli Zhao and published by . This book was released on 2007 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: The selective oxidation of propylene to acrolein was found to exhibit the following reaction kinetics r = k[C3H6]1 [O2]1/2[*]02, in which [*]0 represents the total number of catalytic surface VO4 active sites/g of catalyst and k is an apparent rate constant that is a function of krds and Kads. The second order dependence on [*]0 suggests that two surface VO4 sites are involved in the rds of propylene oxidation. Although the reaction rate increases as [*]02 with surface vanadia coverage, the most pronounced effect on the reaction kinetics was observed by changing the specific oxide support (ZrO2 & sim; TiO2> Nb2O 5> Al2O3> SiO2). This almost 10 2 variation in Turnover Frequency (TOF) is related to the electron density on the bridging V-O-Support bond that is controlled by the electronegativity of the support cation. Consequently, the lower the support cation electronegativity, the greater the residual electron density on the bridging V-O-support bond for accelerating the redox kinetics.
Author : Jacques C. Vedrine
Publisher : Elsevier
ISBN 13 : 0128116323
Total Pages : 620 pages
Book Rating : 4.1/5 (281 download)
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
Author : Ying Zhou
Publisher : BoD – Books on Demand
ISBN 13 : 1789232627
Total Pages : 231 pages
Book Rating : 4.7/5 (892 download)
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.
Author : David Edward Self
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (61 download)
Download or read book The Partial Oxidation of Propylene to Acrolein Over Mixed Metal Oxides written by David Edward Self and published by . This book was released on 1979 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Noritaka Mizuno
Publisher : John Wiley & Sons
ISBN 13 : 3527627553
Total Pages : 356 pages
Book Rating : 4.5/5 (276 download)
Download or read book Modern Heterogeneous Oxidation Catalysis written by Noritaka Mizuno and published by John Wiley & Sons. This book was released on 2009-11-18 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a gap in the current literature, this comprehensive reference presents all important catalyst classes, including metal oxides, polyoxometalates, and zeolites. Readers will find here everything they need to know -- from structure design to characterization, and from immobilization to industrial processes. A true must-have for anyone working in this key technology.
Author : Sandra Anni Setyowati Wibawanta
Publisher :
ISBN 13 :
Total Pages : 318 pages
Book Rating : 4.:/5 (131 download)
Download or read book Catalytic Partial Oxidation of Propylene for Acrolein Production written by Sandra Anni Setyowati Wibawanta and published by . This book was released on 2011 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis, which was to develop a high activity catalyst with 95% selectivity to acrolein at 350oC, was successfully achieved by Mo12Bi1.5Fe0.8Co3.5W0.6K0.04Si1.4P0.7Ox catalyst. The screening tests even when using propylene feed-stocks straight from the refinery by-product without prior purification have proven the consistency in catalytic performance, thereby confirming the reliability of the preparation technique. In trying to make the catalyst more robust, it was physically modified to spheres and pellets and was used successfully in a fixed bed reactor.
Author : Rutger A Van Santen
Publisher : World Scientific
ISBN 13 : 1800614020
Total Pages : 719 pages
Book Rating : 4.8/5 (6 download)
Download or read book Mechanisms In Heterogeneous Catalysis written by Rutger A Van Santen and published by World Scientific. This book was released on 2023-06-28 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous catalysis has developed over the past two centuries as a technology driven by the needs of society, and is part of Nobel Prize-winning science. This book describes the spectacular increase in molecular understanding of heterogenous catalytic reactions in important industrial processes. Reaction mechanism and kinetics are discussed with a unique focus on their relation with the inorganic chemistry of the catalyst material. An introductory chapter presents the development of catalysis science and catalyst discovery from a historical perspective. Five chapters that form the thrust of the book are organized by type of reaction, reactivity principles, and mechanistic theories, which provide the scientific basis to structure-function relationships of catalyst performance. Present-day challenges to catalysis are sketched in a final chapter. Written by one of the world's leading experts on the topic, this definitive text is an essential reference for students, researchers and engineers working in this multibillion-dollar field.
Author : Gabriele Centi
Publisher : Springer Science & Business Media
ISBN 13 : 1461541751
Total Pages : 519 pages
Book Rating : 4.4/5 (615 download)
Download or read book Selective Oxidation by Heterogeneous Catalysis written by Gabriele Centi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selective Oxidation by Heterogeneous Catalysis covers one of the major areas of industrial petrochemical production, outlining open questions and new opportunities. It gives keys for the interpretation and analysis of data and design of new catalysts and reactions, and provides guidelines for future research. A distinctive feature of this book is the use of concept by example. Rather than reporting an overview of the literature results, the authors have selected some representative examples, the in-depth analysis of which makes it possible to clarify the fundamental, but new concepts necessary for a better understanding of the new opportunities in this field and the design of new catalysts or catalytic reactions. Attention is given not only to the catalyst itself, but also to the use of the catalyst inside the process, thus evidencing the relationship between catalyst design and engineering aspects of the process. This book provides suggestions for new innovative directions of research and indications on how to reconsider the field of selective oxidation from different perspectives, outlining that is not a mature field of research, but that new important breakthroughs can be derived from fundamental and applied research. Suggestions are offered on how to use less conventional approaches in terms of both catalyst design and analysis of the data.
