Rare Earth Intermetallic Compounds As Catalysts For The Hydrogenation Of Carbon Monoixde
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Rare Earth Intermetallic Compounds As Catalysts For The Hydrogenation Of Carbon Monoxide
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Author : Victoria Tan Coon
language : en
Publisher:
Release Date : 1977
Rare Earth Intermetallic Compounds As Catalysts For The Hydrogenation Of Carbon Monoxide written by Victoria Tan Coon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.
Hydrogenation Catalysts From Intermetallic Compounds
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Author :
language : en
Publisher:
Release Date : 1982
Hydrogenation Catalysts From Intermetallic Compounds written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Catalysts categories.
Rare Earth Intermetallic Compounds As Catalysts For The Hydrogenation Of Carbon Monoixde
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Author : Victoria Tan Coon
language : en
Publisher:
Release Date : 1977
Rare Earth Intermetallic Compounds As Catalysts For The Hydrogenation Of Carbon Monoixde written by Victoria Tan Coon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.
Handbook On The Physics And Chemistry Of Rare Earths
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Author : K.A. Gschneidner
language : en
Publisher: North Holland
Release Date : 2000-10-09
Handbook On The Physics And Chemistry Of Rare Earths written by K.A. Gschneidner and has been published by North Holland this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-10-09 with Science categories.
Among the numerous applications of the rare-earth elements, the field of catalysis accounts for a large number. Catalysis represents approximately 20% of the total market sales of rare earths worldwide. As a matter of fact two main applications have been prominent in the last decades: zeolite stabilization for fluid cracking catalysts, and automotive post-combustion catalytic treatment. The oldest use of rare earths in catalysis deals with the structural and chemical stabilization of the zeolites for petroleum cracking applications. For a long time this has been an area of application for non-separated rare earths. The addition of several percent of rare earths in the pores of the zeolite results in a strong surface acidity, which is essential for an efficient conversion of high-weight molecules into lighter species, like low-octane fuel, even in the very aggressive conditions of the petroleum industry. The popular demand for high-quality air in spite of the traffic congestion in large cities resulted in larger and larger constraints in the emission exhaust from cars. Thus highly efficient catalysts have had to be designed, and due to the combination of its redox properties and very good thermal stability, cerium oxide has been since the beginning, early in the 1980s, a major component of the three-way catalysts (TWC) now used in all modern gasoline cars. The future of rare earths in catalysis is probably bright. The fact that approximately 400 patents are applied for yearly in the area since 1992 is an illustration of a very active area. Usage of rare earths in catalysis is expected to grow due to their highly specific properties. Instead of the physical properties used in electronic applications, one deals now with redox properties, water and thermal stability, coordination numbers and so forth. The rare earths are so specific in these properties that their use can hardly be avoided, not only for the beauty of academic studies but also for the development of industrial applications with immediate influence on everyday life. Careful control of the synthesis conditions and the definition of optimum composition in each case are the keys to the preparation of highly performing compounds for catalytic applications. They must actually be considered as high performance products with functional properties, and not just chemical species. Chapters devoted primarily to catalysis have been published in earlier volumes of the Handbook. In this volume several more are added. The first is an extension of the earlier chapter 43, on interactions at surfaces of metals and alloys, to reactions such as hydrogenation, methanation, ammonia synthesis, saturated hydrocarbon reactions, dehydrogenation of hydrogenated materials, hydrodesulfurization, and carbon monoxide oxidation. The second chapter reports on the wide variety of catalyzed reactions involving metals and alloys in the innovated form of metal overlayers or bimetallic compounds with some transition metals produced from ammonia solutions. This is followed by a chapter on catalysis with mixed oxides usually having perovskite or perovskite-related structures. Then follows a comprehensive discussion on the background and current role of cerium oxide and associated materials for post-treatment of exhaust gases for pollution control. These three-way catalysts (TWC) are designed to render harmless the CO, NOx, and unburned hydrocarbons from internal combustion engines. The next chapter considers the wide field of zeolite catalysts containing rare earths from their historic use in petroleum refining in the 1960s to other petrochemical and fine chemical applications today. The final chapter documents the use of the triflates (the trifluoro-methane-sulfonyl group which is a hard Lewis acid in both aqueous and organic solutions) as versatile catalysts in carbon-carbon bond-forming reactions. Their stability in the presence of water, in spite of their being hard Lewis acids, enhances their growing usefulness.
A Study Of Some Intermetallic Compounds In Connection With The Catalytic Hydrogenation Of Carbon Monoxide
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Author : John Earl France
language : en
Publisher:
Release Date : 1982
A Study Of Some Intermetallic Compounds In Connection With The Catalytic Hydrogenation Of Carbon Monoxide written by John Earl France and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Carbon monoxide categories.
Fossil Energy Update
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Author :
language : en
Publisher:
Release Date : 1978
Fossil Energy Update written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Fossil fuels categories.
Catalytic Reduction Of Nitric Oxide With Carbon Monoxide By Rare Earth Oxides And Noble Metal Catalysts
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Author : Jen-Liang Wu
language : en
Publisher:
Release Date : 1976
Catalytic Reduction Of Nitric Oxide With Carbon Monoxide By Rare Earth Oxides And Noble Metal Catalysts written by Jen-Liang Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Carbon monoxide categories.
Rare Earth Chemistry
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Author : Rainer Pöttgen
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2020-10-26
Rare Earth Chemistry written by Rainer Pöttgen and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-26 with Science categories.
This work introduces into the chemistry, materials science and technology of Rare Earth Elements. The chapters by experienced lecturers describe comprehensively the recent studies of their characteristics, properties and applications in functional materials. Due to the broad range of covered topics as hydrogen storage materials, LEDs or permanent magnets this work gives an up-to-date presentation of this fascinating research.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1981
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Catalytic Hydrogenation
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Author : L. Cervený
language : en
Publisher: Elsevier
Release Date : 1986-08-01
Catalytic Hydrogenation written by L. Cervený and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-08-01 with Technology & Engineering categories.
The collection of contributions in this volume presents the most up-to-date findings in catalytic hydrogenation. The individual chapters have been written by 36 top specialists each of whom has achieved a remarkable depth of coverage when dealing with his particular topic. In addition to detailed treatment of the most recent problems connected with catalytic hydrogenations, the book also contains a number of previously unpublished results obtained either by the authors themselves or within the organizations to which they are affiliated.Because of its topical and original character, the book provides a wealth of information which will be invaluable not only to researchers and technicians dealing with hydrogenation, but also to all those concerned with homogeneous and heterogeneous catalysis, organic technology, petrochemistry and chemical engineering.