Author : Robert Oak Savinelli
Publisher :
Page : 476 pages
File Size : 27,29 MB
Release : 2011
Category :
ISBN : 9781124657622
This dissertation investigates the use of heterogeneous molybdenum catalysts for use in water-gas shift (WGS) and methane dehydroaromatization (MDA) chemistry. The WGS reaction, CO + H2O & lrarr2; H2 + CO2, is catalyzed by unsupported molybdenum carbide (Mo2C). The MDA reaction, 6 CH4 & lrarr2; C6H6 + 9 H2, is catalyzed by a zeolite-supported molybdenum catalyst, Mo/HZSM-5. Both reactions involve Mo2C, hydrogen production, and are industrially relevant.
Author : R. Maggi
Publisher : Elsevier
Page : 1007 pages
File Size : 47,38 MB
Release : 1998-08-17
Category : Technology & Engineering
ISBN : 0080539459
The proceedings of the VIIth International Symposium on the Scientific Bases for the Preparation of Heterogeneous Catalysts, are in line with the general scope of this series of events. Emphasis in all Symposia has been on the scientific aspects of the preparation of new and industrial catalysts, or on new methods of preparation, rather than on the catalytic reactions in which such solids are ultimately used. In the present context, the catalytic event itself has only been considered as another, though often decisive, method of catalyst characterization.
Author : Pavel Topka
Publisher : LAP Lambert Academic Publishing
Page : 152 pages
File Size : 23,6 MB
Release : 2013
Category :
ISBN : 9783659426490
Alkene metathesis attracted recently much attention, especially with the 2005 Nobel prize awarded for the development of the metathesis method in organic synthesis. Supported molybdenum oxide catalysts are widely used in industrial petrochemical processes, including metathesis (e.g. Phillips triolefin process, Shell higher olefin process). The present work discloses new type of metathesis catalysts based on molybdenum oxide supported on mesoporous silica. The key idea is to improve the activity of molybdenum oxide catalyst in this reaction utilizing high surface area and narrow pore size distribution of the support material. For the preparation of the catalysts, innovative and environmentally friendly thermal spreading method was employed. The thorough characterization of the catalysts by physicochemical techniques is described. The analysis of activity/selectivity vs. composition/structure relationships should help shed some light on this new and exciting field of heterogeneous catalysis, and should be especially useful to professionals in metathesis chemistry, or anyone else who may be considering utilizing molybdenum oxide catalysts for another catalytic reaction.
Author : Jacques C. Vedrine
Publisher : Elsevier
Page : 620 pages
File Size : 15,62 MB
Release : 2018-01-11
Category : Technology & Engineering
ISBN : 0128116323
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 : E. Gaigneaux
Publisher : Elsevier
Page : 1150 pages
File Size : 26,65 MB
Release : 2002-08-29
Category : Technology & Engineering
ISBN : 0080540740
It has become a tradition that every four years, the Université Catholique de Louvain and the Katholieke Universiteit Leuven jointly organize a symposium devoted to the scientific bases for the preparation of heterogeneous catalysts. These meetings bring together researchers from academia and industry and offer a forum for discussions on the chemistry involved in the preparation of industrial heterogeneous catalysts. This volume containing the Proceedings of the 8th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts consists of papers summarizing most of the 139 oral communications and posters selected by the international scientific committee, composed of 27 experts in the field of catalyst preparation, holding an industrial or academia appointment.The contributions focus on the aspects of catalyst preparation. The main topics are: new approaches in catalyst preparation; advanced preparations of nanoporous and mesoporous catalysts; catalysts preparation for special performances and purposes; catalysts for environmental purposes; and molecular catalysis. Emphasis is put on the role that catalysis can play as an essential element of sustainable development.
Author : Martin D. Schlesinger
Publisher :
Page : 20 pages
File Size : 24,54 MB
Release : 1962
Category : Catalysts
ISBN :
Experimental data for coal hydrogenation are presented to show that when a vehicle oil produced from coal is present, coal is hydrogenated to the same conversion whether molybdenum catalyst is impregnated on the coal or intimately mixed with the slurry. Differences in product distribution could be related to the severity of operating conditions. No minimum mixing time was established, but 2 hours was sufficient. Longer periods of mixing, to 14.75 hours, had no effect on the results. The hydrogenation conditions were in the pressure range of 8,500 to 10,000 p.s.i. at 400° to 500° C. Most of the experiments were made in duplicate.
Author : G. Poncelet
Publisher : Elsevier
Page : 723 pages
File Size : 28,54 MB
Release : 2011-09-22
Category : Technology & Engineering
ISBN : 0080887635
Preparation of Catalysts I
Author : Th. Weber
Publisher : Springer Science & Business Media
Page : 376 pages
File Size : 18,93 MB
Release : 1998-09-30
Category : Science
ISBN : 9780792352556
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 : Ge, Hui
Publisher : IGI Global
Page : 174 pages
File Size : 28,44 MB
Release : 2017-02-08
Category : Technology & Engineering
ISBN : 1522522751
Mo(W)-Based Catalysts have the capacity to drastically impact many different industries. Research on their most current applications is important for the success of many organizations and companies, specifically the chemical and petroleum industries. Innovative Applications of Mo(W)-Based Catalysts in the Petroleum and Chemical Industry: Emerging Research and Opportunities is an informative resource that overviews emerging methods and techniques that incorporate 2D layer Mo(W) dichalcogenides. Featuring extensive coverage on a range of subjects including 2D nanosheets, hybridization, dichacogenides, and oxide based catalysts, this is an ideal publication for academicians, students, engineers, and researchers seeking insight on the latest advancements in Mo(W)-Based catalyst applications.
Author : Ronald Laidlaw Moss
Publisher :
Page : 28 pages
File Size : 49,39 MB
Release : 1968
Category : Catalysts
ISBN :
