Model Catalytic Oxidation Studies Using Supported Monometallic And Heterobimetallic Oxides Progress Report August 1 1991 January 31 1992

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Model Catalytic Oxidation Studies Using Supported Monometallic and Heterobimetallic Oxides. Progress Report, August 1, 1991--January 31, 1992

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ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Model Catalytic Oxidation Studies Using Supported Monometallic and Heterobimetallic Oxides. Progress Report, August 1, 1991--January 31, 1992 by :

Download or read book Model Catalytic Oxidation Studies Using Supported Monometallic and Heterobimetallic Oxides. Progress Report, August 1, 1991--January 31, 1992 written by and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research program is directed toward a more fundamental understanding of the effects of catalyst composition and structure on the catalytic properties of metal oxides. Metal oxide catalysts play an important role in many reactions bearing on the chemical aspects of energy processes. Metal oxides are the catalysts for water-gas shift reactions, methanol and higher alcohol synthesis, isosynthesis, selective catalytic reduction of nitric oxides, and oxidation of hydrocarbons. A key limitation to developing insight into how oxides function in catalytic reactions is in not having precise information of the surface composition under reaction conditions. To address this problem we have prepared oxide systems that can be used to study cation-cation effects and the role of bridging ( -O- ) and/or terminal (=O) surface oxygen anion ligands in a systematic fashion. Since many oxide catalyst systems involve mixtures of oxides, we selected a model system that would permit us to examine the role of each cation separately and in pairwise combinations. Organometallic molybdenum and tungsten complexes were proposed for use, to prepare model systems consisting of isolated monomeric cations, isolated monometallic dimers and isolated bimetallic dimers supported on silica and alumina. The monometallic and bimetallic dimers were to be used as models of more complex mixed- oxide catalysts. Our current program was to develop the systems and use them in model oxidation reactions.

Energy Research Abstracts

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ISBN 13 :
Total Pages : 754 pages
Book Rating : 4.3/5 (129 download)

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Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Model Catalytic Oxidation Studies Using Supported Monometallic and Heterobimetallic Oxides

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ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Model Catalytic Oxidation Studies Using Supported Monometallic and Heterobimetallic Oxides by :

Download or read book Model Catalytic Oxidation Studies Using Supported Monometallic and Heterobimetallic Oxides written by and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research program is directed toward a more fundamental understanding of the effects of catalyst composition and structure on the catalytic properties of metal oxides. Metal oxide catalysts play an important role in many reactions bearing on the chemical aspects of energy processes. Metal oxides are the catalysts for water-gas shift reactions, methanol and higher alcohol synthesis, isosynthesis, selective catalytic reduction of nitric oxides, and oxidation of hydrocarbons. A key limitation to developing insight into how oxides function in catalytic reactions is in not having precise information of the surface composition under reaction conditions. To address this problem we have prepared oxide systems that can be used to study cation-cation effects and the role of bridging ( -O- ) and/or terminal (=O) surface oxygen anion ligands in a systematic fashion. Since many oxide catalyst systems involve mixtures of oxides, we selected a model system that would permit us to examine the role of each cation separately and in pairwise combinations. Organometallic molybdenum and tungsten complexes were proposed for use, to prepare model systems consisting of isolated monomeric cations, isolated monometallic dimers and isolated bimetallic dimers supported on silica and alumina. The monometallic and bimetallic dimers were to be used as models of more complex mixed- oxide catalysts. Our current program was to develop the systems and use them in model oxidation reactions.

Government Reports Annual Index

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ISBN 13 :
Total Pages : 1228 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Support Effects Studied on Model Supported Catalysts. Progress Report, April 1, 1991--March 31, 1992

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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Support Effects Studied on Model Supported Catalysts. Progress Report, April 1, 1991--March 31, 1992 by :

Download or read book Support Effects Studied on Model Supported Catalysts. Progress Report, April 1, 1991--March 31, 1992 written by and published by . This book was released on 1991 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are studying model catalysts in which the active phase is deposited onto flat oxide substrates in order to understand how a catalyst is affected by its support. We have examined the following growth and stability of titania overlayers which had been vapor deposited onto a Rh foil; the growth of Pt films on ZnO(0001)Zn and O(0001)O and compared the results to those obtained for Pt on?-Al2O3(0001). Samples were prepared by vapor deposition of Pt onto flat substrates in ultra high vacuum, and metal coverages were measured using a quartz-crystal, film thickness monitor; the structure and CO adsorption properties of Pt films vapor deposited onto a ZrO2(100) crystal; the deposition of Rh on a ZrO2(100) crystal; The absorption of NO on Pt particles supported on CeO2,?-Al2O3(0001), and the Zn- and O-polar surfaces of ZnO(0001). We have investigated supported oxides in order to understand the acidic properties that have been reported for monolayer oxides. Our first studies were of amorphous, silicalumina catalysts. Finally, we have also begun to prepare model supported oxides in order to be able to used spectroscopic methods to characterize the sites formed on these materials. Our first studies were of niobia deposition on oxidized Al films and on an?-Al2O3(0001) crystal.

Government Reports Announcements & Index

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ISBN 13 :
Total Pages : 1244 pages
Book Rating : 4.:/5 (31 download)

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Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1992 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Discours sur l'estat présent des affaires des Grisons ... avec une déclaration de tout ce qui s'y est passé durant lesdites procédures. Le tout publié par les Seigneurs Chefs, conseillers et communautés des trois ligues grises ... Traduit d'allemand en françois par S.W.

Download Discours sur l'estat présent des affaires des Grisons ... avec une déclaration de tout ce qui s'y est passé durant lesdites procédures. Le tout publié par les Seigneurs Chefs, conseillers et communautés des trois ligues grises ... Traduit d'allemand en françois par S.W. PDF Online Free

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (491 download)

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Book Synopsis Discours sur l'estat présent des affaires des Grisons ... avec une déclaration de tout ce qui s'y est passé durant lesdites procédures. Le tout publié par les Seigneurs Chefs, conseillers et communautés des trois ligues grises ... Traduit d'allemand en françois par S.W. by :

Download or read book Discours sur l'estat présent des affaires des Grisons ... avec une déclaration de tout ce qui s'y est passé durant lesdites procédures. Le tout publié par les Seigneurs Chefs, conseillers et communautés des trois ligues grises ... Traduit d'allemand en françois par S.W. written by and published by . This book was released on 1618 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Catalytic Hydrocarbon Reactions Over Supported Metal Oxides. Progress Report, April 1, 1994--January 31, 1995

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ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (683 download)

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Book Synopsis Catalytic Hydrocarbon Reactions Over Supported Metal Oxides. Progress Report, April 1, 1994--January 31, 1995 by :

Download or read book Catalytic Hydrocarbon Reactions Over Supported Metal Oxides. Progress Report, April 1, 1994--January 31, 1995 written by and published by . This book was released on 1995 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxide catalysis plays a central role in hydrocarbon processing and improvements in catalytic activity or selectivity are of great technological importance because these improvements will translate directly into more efficient utilization of hydrocarbon supplies and lower energy consumption in separation processes. An understanding of the relationships between surface structure and catalytic properties is needed to describe and improve oxide catalysts. Our approach has been to prepare supported oxides that have a specific structure and oxidation state and then employ these structures in reaction studies. Our current research program is focused on studying the fundamental relationships between structure and reactivity for two important reactions that are present in many oxide-catalyzed processes, partial oxidation and carbon-carbon bond formation. Oxide catalysis can be a complex process with both metal cation and oxygen anions participating in the chemical reactions. From an energy perspective carbon-carbon bond formation is particularly relevant to CO hydrogenation in isosynthesis. Hydrogenolysis and hydrogenation form the basis for heteroatom removal in fuels processing. Understanding the catalysis of these processes (and others) requires isolating reaction steps in the overall cycle and determining how structure and composition influence the individual reaction steps. Specially designed oxides, such as we use, permit one to study some of the steps in oxidation, carbon-carbon coupling and heteroatom removal catalysis. During the course of our studies we have: (1) developed methods to form and stabilize various Mo and W oxide structures on silica; (2) studied C-H abstraction reactions over the fully oxidized cations; (3) studied C-C bond coupling by methathesis and reductive coupling of aldehydes and ketones over reduced cation structures; and (4) initiated a study of hydrogenation and hydrogenolysis over reduced cation structures.

New Developments in Selective Oxidation by Heterogeneous Catalysis

Author : P. Ruiz
Publisher : Elsevier
ISBN 13 : 0080887139
Total Pages : 493 pages
Book Rating : 4.0/5 (88 download)

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Book Synopsis New Developments in Selective Oxidation by Heterogeneous Catalysis by : P. Ruiz

Download or read book New Developments in Selective Oxidation by Heterogeneous Catalysis written by P. Ruiz and published by Elsevier. This book was released on 1992-02-06 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains invited papers and communications presented at the Third European Workshop Meeting on Selective Oxidation by Heterogeneous Catalysis. The purpose of the meeting was to present recent results and to discuss new aspects of partial oxidation by heterogeneous catalysis. The following topics were discussed: Novel processes for obtaining new fine chemicals by catalytic partial oxidation; selective oxidation and oxidative dehydrogenation of alkanes; new catalysts and advances in preparation methods of oxidation catalysts; new phenomena in partial oxidation and new aspects of surface chemistry in oxide catalysts; new applications of physicochemical methods for characterization of oxide catalysts; oxidation with other agents than oxygen and catalytic oxidation of carbohydrates. This book will provide a valuable set of data on reactions of selective oxidation which will be extremely useful to catalyst and related practitioners, whether fundamentalists or highly applied, and to process engineers who wish to evaluate current findings in this field. The wide-range approach to reactions of selective oxidation will disseminate knowledge in specialized areas of selective oxidation and encourage innovation and creativity.

Еврейская автономная область памфлет коллестион

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ISBN 13 : 9781231374290
Total Pages : 50 pages
Book Rating : 4.3/5 (742 download)

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Book Synopsis Еврейская автономная область памфлет коллестион by :

Download or read book Еврейская автономная область памфлет коллестион written by and published by . This book was released on 1988 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuente: Wikipedia. P ginas: 49. Cap tulos: Compositores de Jalisco, Cultura de Guadalajara, Educaci n en Jalisco, Gastronom a de Jalisco, Mariachi, Museos de Jalisco, Universidades de Jalisco, Tejuino, Universidad Nacional Aut noma de M xico, Mariachi Vargas de Tecalitl n, Cultura en Guadalajara, Universidad Aut noma de Guadalajara, Escuela Preparatoria de Jalisco, Rock tapat o, Centro de Ense anza T cnica Industrial, Instituto Panamericano de Alta Direcci n de Empresas, El Son de la Negra, XHUDG-TV, Hospicio Caba as, Arquidi cesis de Guadalajara, Universidad Marista, Museo Regional de Guadalajara, XHGJG-TV, Centro Universitario UTEG, Centro Universitario del Sur, Torta ahogada, Instituto de Ciencias Biol gicas, El Colegio de Jalisco, Museo Guggenheim de Guadalajara, Puerta Guadalajara, Encuentro Internacional del Mariachi y la Charrer a, Museo Comunitario de Tecolotl n, Instituto Tecnol gico de Ocotl n, Birria, Virote, Coachala, Chroma, Centro Cultural Universitario, Instituto Tecnol gico Superior de Zapopan, Carne en su jugo, Jos Rol n, Festival de las flores, Florentino Franco Miranda, Jericalla, Caldo michi, Ballet de C mara de Jalisco, Museo Nacional del Tequila, Explanada Patria, Birote salado. Extracto: La Universidad Nacional Aut noma de M xico (UNAM) es una universidad p blica mexicana, fundada el 22 de septiembre de 1910 con el nombre de Universidad Nacional de M xico, aunque hered el car cter de universidad de la Real y Pontificia Universidad de M xico, la que a su vez se estableci el 21 de septiembre de 1551 por c dula firmada por Carlos V y se clausur en el siglo XIX. La UNAM es la universidad m?'s grande e importante de M xico; tiene como prop sito primordial estar al servicio del pa?'s y de la humanidad, as como formar profesionistas tiles a la sociedad, organizar y realizar investigaciones, principalmente acerca de las condiciones y problemas nacionales, y extender, con la mayor amplitud posible, los beneficios de la cultura. Como universidad...

Catalytic Oxidation of Hydrocarbons

Author : Karl C. Stein
Publisher :
ISBN 13 :
Total Pages : 1200 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Catalytic Oxidation of Hydrocarbons by : Karl C. Stein

Download or read book Catalytic Oxidation of Hydrocarbons written by Karl C. Stein and published by . This book was released on 1963 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Catalytic Hydrocarbon Reactions Over Supported Metal Oxides. Final Report, August 1, 1986--July 31, 1995

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ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis Catalytic Hydrocarbon Reactions Over Supported Metal Oxides. Final Report, August 1, 1986--July 31, 1995 by :

Download or read book Catalytic Hydrocarbon Reactions Over Supported Metal Oxides. Final Report, August 1, 1986--July 31, 1995 written by and published by . This book was released on 1995 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxide catalysis plays a central role in hydrocarbon processing and improvements in catalytic activity or selectivity are of great technological importance because these improvements will translate directly into more efficient utilization of hydrocarbon supplies and lower energy consumption in separation processes. An understanding of the relationships between surface structure and catalytic properties is needed to describe and improve oxide catalysts. The approach has been to prepare supported oxides that have a specific structure and oxidation state and then employ these structures in reaction studies. The current research program is focused on studying the fundamental relationships between structure and reactivity for two important reactions that are present in many oxide-catalyzed processes, partial oxidation and carbon-carbon bond formation. During the course of these studies the author has: (1) developed methods to form and stabilize various Mo and W oxide structures on silica; (2) studied C-H abstraction reactions over the fully oxidized cations; (3) studied C-C bond coupling by metathesis and reductive coupling of aldehydes and ketones over reduced cation structures; and (4) initiated a study of hydrogenation and hydrogenolysis over reduced cation structures.

Vie du rév. Thomas Scott

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (718 download)

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Download or read book Vie du rév. Thomas Scott written by and published by . This book was released on 1835 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Catalytic Hydrocarbon Reactions Over Supported Metals. Progress Report, February 1, 1992--March 31, 1993

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ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Catalytic Hydrocarbon Reactions Over Supported Metals. Progress Report, February 1, 1992--March 31, 1993 by :

Download or read book Catalytic Hydrocarbon Reactions Over Supported Metals. Progress Report, February 1, 1992--March 31, 1993 written by and published by . This book was released on 1993 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past year we have completed our characterization of the factors that control the structure of fully oxidized W and Mo on silica and have established that support hydroxyl groups play a central role in dispersing and attaching cations to the support oxide. Work with M2(CO)4Cp2(M2=MoMo, WW, MoW) system has been very encouraging and continues to support the notion that it may be possible to control the structure of adsorbed catalysts (in this case generate metal dimers) by use of organometallic precursors. Techniques are being developed necessary to employ XPS as a means to characterize the attachment process and the oxidation state of the cations after various thermal and photolytic reduction steps.

Kinetics and Dynamics of Oxidation Reactions Involving an Adsorbed CO Species on Bulk and Supported Platinum and Copper-oxide. First Year Annual Report, January 1, 1991--December 31, 1991

Download Kinetics and Dynamics of Oxidation Reactions Involving an Adsorbed CO Species on Bulk and Supported Platinum and Copper-oxide. First Year Annual Report, January 1, 1991--December 31, 1991 PDF Online Free

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ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Kinetics and Dynamics of Oxidation Reactions Involving an Adsorbed CO Species on Bulk and Supported Platinum and Copper-oxide. First Year Annual Report, January 1, 1991--December 31, 1991 by :

Download or read book Kinetics and Dynamics of Oxidation Reactions Involving an Adsorbed CO Species on Bulk and Supported Platinum and Copper-oxide. First Year Annual Report, January 1, 1991--December 31, 1991 written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proposed research is an integrated experimental and modeling study of oxidation reactions involving CO as a key player -- be it a reactant, adsorbed intermediate, and/or partial oxidation product -- in the catalytic sequence and chemistry. The reaction systems of interest in the project include CO, formaldehyde, and methanol oxidation by O2 and CO oxidation by NO, on both Pt and copper oxide catalysts. These reactions are of importance in automobile exhaust catalysis. There is a paucity of rate data in the literature for these important environmental control reactions. The goal of this research is to better understand the catalytic chemistry and kinetics of oxidations reactions involving CO as an adsorbed intermediate. Successfully meeting this goal requires an integration of basic kinetic measurements, in situ catalyst surface monitoring, kinetic modeling, and nonlinear mathematical tools.

Catalytic Oxidation of 1,2-dichlorobenzene Over Supported Transition Metal Oxide Catalysts

Author : Meenakshisundaram Krishnamoorthy
Publisher :
ISBN 13 :
Total Pages : 414 pages
Book Rating : 4.:/5 (434 download)

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Book Synopsis Catalytic Oxidation of 1,2-dichlorobenzene Over Supported Transition Metal Oxide Catalysts by : Meenakshisundaram Krishnamoorthy

Download or read book Catalytic Oxidation of 1,2-dichlorobenzene Over Supported Transition Metal Oxide Catalysts written by Meenakshisundaram Krishnamoorthy and published by . This book was released on 1999 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Relationship Between Hydroxyl Groups on Oxide Surfaces and the Properties of Supported Metals: Progress Report, June 1, 1992 Through January 31, 1994

Download The Relationship Between Hydroxyl Groups on Oxide Surfaces and the Properties of Supported Metals: Progress Report, June 1, 1992 Through January 31, 1994 PDF Online Free

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (88 download)

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Book Synopsis The Relationship Between Hydroxyl Groups on Oxide Surfaces and the Properties of Supported Metals: Progress Report, June 1, 1992 Through January 31, 1994 by :

Download or read book The Relationship Between Hydroxyl Groups on Oxide Surfaces and the Properties of Supported Metals: Progress Report, June 1, 1992 Through January 31, 1994 written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: