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Author : Charles N. Satterfield
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (989 download)
Download or read book Kinetics of Thiophene Hydrogenolysis on a Cobalt Molybdate Catalyst written by Charles N. Satterfield and published by . This book was released on 1966 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hyo Chull Lee
Publisher :
ISBN 13 :
Total Pages : 682 pages
Book Rating : 4.:/5 (263 download)
Download or read book Kinetic Studies on Hydrodesulfurization of Thiophenic Compounds Over Cobalt Molybdate Catalyst written by Hyo Chull Lee and published by . This book was released on 1976 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Deniz Uner
Publisher : CRC Press
ISBN 13 : 1498729983
Total Pages : 410 pages
Book Rating : 4.4/5 (987 download)
Download or read book Advances in Refining Catalysis written by Deniz Uner and published by CRC Press. This book was released on 2017-03-16 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: To meet changing market demands that have stringent emission standards and to ensure proper performance in refinery units, evaluation of novel catalyst designs and results from material characterization and testing of catalysts are of crucial importance for refiners as well as for catalyst manufacturers. This book highlights recent developments in the application of refinery catalysts in selected units such as fluid catalytic cracking (FCC), hydrogen production for hydroprocessing units, hydrotreating, hydrocracking, and sustainable processing of biomass into biofuels.
Author : Anthony Edward Hargreaves
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (117 download)
Download or read book The Mechanism of the Catalytic Hydrodesulphurisation of Thiophene written by Anthony Edward Hargreaves and published by . This book was released on 1976 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The object of the work is to contribute to the understanding of the thiophene hydrodesulphurisation reaction over CoO. MoO 3. A1 2 0 3 catalysts. In particular, two areas have been chosen for the investigation. These are: the mechanism of the reaction and the pretreatment of the catalyst which is required in order to produce the catalytic activity. Previous work has been carried out in both of these areas but there is as yet no general agreement, amongst the various authors, as to what represents the true situation. The chemical nature of the active catalyst is considered by some authors to be a reduced form of the oxide whereas others regard the sulphidic form as being active. In the work described here, each chemical form of the catalyst which could exist under the conditions of the hydrodesulphurisation reaction is investigated and the active form of the catalyst is found to be a reduced sulphide. The steps leading up to the formation of the active catalyst have also been investigated and the results related to the thermodynamic data of the possible surface compounds. The investigation of the mechanism centers around the steps leading up to the breaking of the C-S bonds to yield C 4 hydrocarbons and H 2 S, as this is the part of the reaction which is least understood. Some authors have proposed hydrogenation of the thiophene ring as proceeding C-S bond cleavage whereas other authors regard the C-S bond cleavage reaction as occurring without prior ring hydrogenation. By studying the reactions of the possible intermediates over catalysts with different cobalt and molybdenum contents, results are obtained which provide evidence for a mechanism involving hydrogenation of thiophene to tetrahydrothiophene on one type of active site followed by C-S bond cleavage in the tetrahydrothiophene to give 1,3-butadiene plus H 2 S on a second type of active site.
Author : Richard Jeffrey Welsch
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (718 download)
Download or read book The Hydrosulfurization of Thiophene Over Cobalt Molybdate Catalyst Using a Monte Carlo Technique written by Richard Jeffrey Welsch and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Said S.E.H. Elnashaie
Publisher : CRC Press
ISBN 13 : 9780203911501
Total Pages : 672 pages
Book Rating : 4.9/5 (115 download)
Download or read book Conservation Equations And Modeling Of Chemical And Biochemical Processes written by Said S.E.H. Elnashaie and published by CRC Press. This book was released on 2003-03-26 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting strategies in control policies, this text uses a systems theory approach to predict, simulate and streamline plant operation, conserve fuel and resources, and increase workplace safety in the manufacturing, chemical, petrochemical, petroleum, biochemical and energy industries. Topics of discussion include system theory and chemical/biochemical engineering systems, steady state, unsteady state, and thermodynamic equilibrium, modeling of systems, fundamental laws governing the processes in terms of the state variables, different classifications of physical models, the story of chemical engineering in relation to system theory and mathematical modeling, overall heat balance with single and multiple chemical reactions and single and multiple reactions.
Author :
Publisher :
ISBN 13 :
Total Pages : 762 pages
Book Rating : 4.:/5 (318 download)
Download or read book Kinetics and Catalysis written by and published by . This book was released on 1991 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George Willard Roberts
Publisher :
ISBN 13 :
Total Pages : 558 pages
Book Rating : 4.:/5 (953 download)
Download or read book Part I: The Kinetics of Thiophene Hydrogenolysis written by George Willard Roberts and published by . This book was released on 1965 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Th. Weber
Publisher : Springer Science & Business Media
ISBN 13 : 9401735778
Total Pages : 357 pages
Book Rating : 4.4/5 (17 download)
Download or read book Transition Metal Sulphides written by Th. Weber and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrotreating catalysis with transition metal sulphides is one of the most important areas of industrial heterogeneous catalysis. The present book deals with the chemical and catalytic aspects of transition metal sulphides, focusing on their use in hydrotreating catalysis. The book¿s 12 chapters present reviews of solid-state, coordination and organometallic chemistry, surface science and spectroscopic studies, quantum chemical calculations, catalytic studies with model and real catalysts, as well as refinery processes. A presentation of state-of-the-art background to pertinent work in the field. Can be used as an introduction to the chemical and catalytic properties of transition metal sulphides as well as an advanced level reference.
Author :
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.3/5 (91 download)
Download or read book Journal of the Institution of Engineers (India). written by and published by . This book was released on 1993 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Oak Ridge National Laboratory
Publisher :
ISBN 13 :
Total Pages : 944 pages
Book Rating : 4.:/5 (319 download)
Download or read book Inventory of energy research and development--1973-1975 written by Oak Ridge National Laboratory and published by . This book was released on 1976 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George W. Roberts
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (258 download)
Download or read book Pt. I: The Kinetics of thiophene hydrogenolysis written by George W. Roberts and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wilson D. Shafer
Publisher : MDPI
ISBN 13 : 303928388X
Total Pages : 414 pages
Book Rating : 4.0/5 (392 download)
Download or read book Iron and Cobalt Catalysts written by Wilson D. Shafer and published by MDPI. This book was released on 2020-06-23 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the turn of the last century when the field of catalysis was born, iron and cobalt have been key players in numerous catalysis processes. These metals, due to their ability to activate CO and CH, haev a major economic impact worldwide. Several industrial processes and synthetic routes use these metals: biomass-to-liquids (BTL), coal-to-liquids (CTL), natural gas-to-liquids (GTL), water-gas-shift, alcohol synthesis, alcohol steam reforming, polymerization processes, cross-coupling reactions, and photocatalyst activated reactions. A vast number of materials are produced from these processes, including oil, lubricants, waxes, diesel and jet fuels, hydrogen (e.g., fuel cell applications), gasoline, rubbers, plastics, alcohols, pharmaceuticals, agrochemicals, feed-stock chemicals, and other alternative materials. However, given the true complexities of the variables involved in these processes, many key mechanistic issues are still not fully defined or understood. This Special Issue of Catalysis will be a collaborative effort to combine current catalysis research on these metals from experimental and theoretical perspectives on both heterogeneous and homogeneous catalysts. We welcome contributions from the catalysis community on catalyst characterization, kinetics, reaction mechanism, reactor development, theoretical modeling, and surface science.
Author :
Publisher :
ISBN 13 :
Total Pages : 682 pages
Book Rating : 4.:/5 (318 download)
Download or read book Kinetics and Catalysis written by and published by . This book was released on 1982 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Motahare Athariboroujeny
Publisher :
ISBN 13 :
Total Pages : 207 pages
Book Rating : 4.:/5 (116 download)
Download or read book Elucidating the CO Hydrogenation Mechanism Over Cobalt Based Catalysts Using Chemical Transient Kinetics written by Motahare Athariboroujeny and published by . This book was released on 2019 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents research performed to advance the fundamental knowledge of the mechanism of the catalytic CO hydrogenation according to the Fischer-Tropsch synthesis. Despite extensive studies on the reaction mechanism, a detailed understanding of the relevant steps is still lacking. Quantitative Chemical Transient Kinetics (CTK) informs us of how the reaction proceeds while the catalytically active phase is being built up. Among the proposed mechanisms, C-C coupling and CO-insertion remain the two main suggested mechanisms. The present work scrutinizes which of these suggestions are compatible with the CTK evidence.We illustrate the importance of surface coverage and support effects. Important mechanistic information is obtained from delay time analysis of the products relative to that of the reactants, provided by CTK. We show that the activated Co/MnOx surface does not provide metallic sites under steady-state conditions. A CO-insertion mechanism occurs at high coverages, while at lower coverages C-C coupling between CHx species can occur. The chemical nature along with the surface coverages yet depend on the H2/CO ratio. For low such ratios, the CO-insertion mechanism dominates, involving formate-derived surface species. Specifically, CO hydrogenation towards methane at different H2/CO ratios shows that two mechanisms co-exist; hydrogenation of formate species when the surface is covered and CHx hydrogenation when the surface still provides metallic sites. Microscopy (TEM) and spectroscopy (XPS) analyses support the CTK conclusions. Some carbon can penetrate the Co surface and induce cobalt carbide formation. We performed CTK analyses with pure Co and Co/TiOx, for comparison purposes. The catalytically active surface is shown to be different for these catalysts. We also compare CTK results of the CO hydrogenation with those of methyl formate (MF) hydrogenation. MF is selected as it contains a formate group and forms methoxy during dissociative adsorption on the surface. Such methoxy species are claimed to be important during Fischer-Tropsch synthesis. CTK studies of the support influence are particularly revealing for Co/SiO2 catalysts. Different from all other catalysts addressed here, the surface coverages over Co/SiO2 do not exceed one monolayer capacity. The impact of this finding regarding the reaction mechanism is still to be explored in future work.
Author : Oak Ridge National Laboratory
Publisher :
ISBN 13 :
Total Pages : 952 pages
Book Rating : 4.:/5 (36 download)
Download or read book Inventory of Energy Research and Development, 1973-1975: Introduction, Energy research and development projects written by Oak Ridge National Laboratory and published by . This book was released on 1976 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Saint Louis University (Philippines). Graduate School of Arts and Sciences
Publisher :
ISBN 13 :
Total Pages : 696 pages
Book Rating : 4.3/5 (91 download)
Download or read book St. Louis University Research Journal written by Saint Louis University (Philippines). Graduate School of Arts and Sciences and published by . This book was released on 1974 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
