June 20, 2021

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Metal Oxides in Heterogeneous Catalysis

Metal Oxides in Heterogeneous Catalysis
Author : Jacques C. Vedrine
Publisher : Elsevier
Release Date : 2018-01-11
Category : Technology & Engineering
Total pages :618
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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

Metal Oxide Catalysis, 2 Volume Set

Metal Oxide Catalysis, 2 Volume Set
Author : S. David Jackson,Justin S. J. Hargreaves
Publisher : John Wiley & Sons
Release Date : 2008-12-23
Category : Science
Total pages :887
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With its two-volume structure, this handbook and ready reference allows for comprehensive coverage of both characterization and applications, while uniform editing throughout ensures that the structure remains consistent. The result is an up-to-date review of metal oxides in catalysis. The first volume covers a range of techniques that are used to characterize oxides, with each chapter written by an expert in the field. Volume 2 goes on to cover the use of metal oxides in catalytic reactions. For all chemists and engineers working in the field of heterogeneous catalysis.

Heterogeneous Catalysis of Mixed Oxides

Heterogeneous Catalysis of Mixed Oxides
Author : Makoto Misono
Publisher : Elsevier Inc. Chapters
Release Date : 2013-02-28
Category : Science
Total pages :192
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The chemistry of metal oxides, both single and mixed metal oxides, relevant to heterogeneous catalysis such as relationships among the composition, structure, and chemical properties of mixed oxides, is provided in perspective. The important chemical properties in heterogeneous catalysis are acid–base and reduction–oxidation (redox) properties, where ionic radii, electronegativity, valency, and tendency to form covalent bond of constituent elements are most influential. Structural factors such as lattice defects and nonstoichiometry are also relevant. Although the surface of metal oxides is different from the solid bulk and changes depending on various factors, the surface reflects more or less the solid bulk and the knowledge of bulk properties is useful to understand the catalysis of mixed oxides. In some cases, the solid bulk actually takes part in catalysis. Other fundamental features of metal oxide catalysis like synergistic effects of more than two different active sites (acid and base, acid and oxidation, etc.) are also discussed.

Heterogeneous Catalysis of Mixed Oxides

Heterogeneous Catalysis of Mixed Oxides
Author : M. Misono
Publisher : Newnes
Release Date : 2013-02-28
Category : Technology & Engineering
Total pages :192
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Mixed oxides are the most widely used catalyst materials for industrial catalytic processes. The principal objective of this book is to describe systematically the mixed oxide catalysts, from their fundamentals through their practical applications. After describing concisely general items concerning mixed oxide and mixed oxide catalysts, two important mixed oxide catalyst materials, namely, heteropolyacids and perovskites, are taken as typical examples and discussed in detail. These two materials have several advantages: 1. They are, respectively, typical examples of salts of oxoacids and double oxide, that is, the two main categories of mixed oxides in solid state chemistry. 2. Both exhibit excellent catalytic performance in nearly crystalline state and are used in several industrial applications. 3. They have studied for many years. In addition, metal oxides functioning as a catalyst support (carrier) are included. Although the supports are very important in practical applications, and tremendous progress has been made in the past decades, few systematic reviews exist. It is notable that heteropolyacids and perovskite exhibit unique performance when used as a support. Fundamental catalytic science and technology and solid state chemistry necessary is presented for the proper understanding of mixed oxide catalysts as well as for R&D. For the latter, the concept of design of practical catalysts is very important. This is considered throughout the book. Systematically describes design principles of mixed oxide catalysts Shows how catalysis and solid-state chemistry of metal oxides are inter-related Covers all useful basic concepts of mixed oxide catalysis

Application of Inorganic Perovskites and Related Metal Oxides in Heterogeneous Catalysis

Application of Inorganic Perovskites and Related Metal Oxides in Heterogeneous Catalysis
Author : Semakaleng Lydia Bewana
Publisher : Unknown
Release Date : 2019
Category : Heterogeneous catalysis
Total pages :131
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Theoretical Aspects of Heterogeneous Catalysis

Theoretical Aspects of Heterogeneous Catalysis
Author : M.A. Nascimento
Publisher : Springer Science & Business Media
Release Date : 2006-04-11
Category : Science
Total pages :258
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Heterogeneous catalysis is a fascinating and complex subject of utmost importance in the present day. Its immense technological and economical importance and the inherent complexity of the catalytic phenomena have stimulated theoretical and experimental studies by a broad spectrum of scientists, including chemists, physicists, chemical engineers, and material scientists. Computational and theoretical techniques are now having a major impact in this field. This book aims to illustrate and discuss the subject of heterogeneous catalysis and to show the current capabilities of the theoretical and computational methods for studying the various steps (diffusion, adsorption, chemical reaction) of heterogeneous catalytic process involving zeolites, metal oxides, and transition metal surfaces. The book covers: the use of techniques of computational chemistry to simulate zeolites, metallic and bimetallic surfaces, and oxide-supported metals; the impact of simulation methods on the understanding of the diffusion and adsorption of molecules and cations within the pores of zeolites, and also on the adsorption of molecules on metal and metal-oxide surfaces; and the applications of quantum-mechanical methods to the study of the reaction mechanism and pathways of the adsorbed molecules. This book is recommended primarily to scientists and graduate students conducting research in the fields of heterogeneous catalysis and surface science. It will also be valuable to advanced undergraduate students wishing to become acquainted with the latest developments in these exciting fields of research, and to experimentalists seeking theoretical support for interpreting their results.

Platinum Group Metal Oxides for Heterogeneous Catalysis

Platinum Group Metal Oxides for Heterogeneous Catalysis
Author : Lauren M. Misch
Publisher : Unknown
Release Date : 2014
Category :
Total pages :161
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Pd-substituted LnFeO3 (Ln = Y, La) showed promising results for increased stabilization of Pd ions under methane partial oxidation conditions. Microwave-assisted heating methods were employed to prepare these materials very rapidly. With just several minutes of microwave-assisted heating, Pd--substituted perovskite materials were prepared for characterization and testing. With the help of our collaborators, Pd--substituted LaFeO3 was applied as a catalyst precursor material for aryl chloride coupling under mild conditions.

Heterogeneous Catalytic Materials

Heterogeneous Catalytic Materials
Author : Guido Busca
Publisher : Newnes
Release Date : 2014-05-23
Category : Science
Total pages :478
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Heterogeneous Catalytic Materials discusses experimental methods and the latest developments in three areas of research: heterogeneous catalysis; surface chemistry; and the chemistry of catalysts. Catalytic materials are those solids that allow the chemical reaction to occur efficiently and cost-effectively. This book provides you with all necessary information to synthesize, characterize, and relate the properties of a catalyst to its behavior, enabling you to select the appropriate catalyst for the process and reactor system. Oxides (used both as catalysts and as supports for catalysts), mixed and complex oxides and salts, halides, sulfides, carbides, and unsupported and supported metals are all considered. The book encompasses applications in industrial chemistry, refinery, petrochemistry, biomass conversion, energy production, and environmental protection technologies. Provides a systematic and clear approach of the synthesis, solid state chemistry and surface chemistry of all solid state catalysts Covers widely used instrumental techniques for catalyst characterization, such as x-ray photoelectron spectroscopy, scanning electron microscopy, and more Includes characterization methods and lists all catalytic behavior of the solid state catalysts Discusses new developments in nanocatalysts and their advantages over conventional catalysts

Heterogeneous Catalysis of Mixed Oxides

Heterogeneous Catalysis of Mixed Oxides
Author : Makoto Misono
Publisher : Elsevier Inc. Chapters
Release Date : 2013-02-28
Category : Science
Total pages :192
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A concise introduction is given to the fundamental knowledge required to understand the heterogeneous catalysis of mixed oxides and to the concept of catalyst design. The fundamental knowledge includes the rate versus equilibrium relation; rate equation; the mechanism of catalytic reaction; essential functions of a catalyst, namely, activity, selectivity, and durability (or life); and catalytic reaction engineering such as mass and heat transfer. Typical methods for the preparation and characterization of catalysts and for the elucidation of the reaction mechanism, as well as a short history of industrial catalysts, are also provided.

Metal Oxide Preparation for Heterogeneous Catalysis

Metal Oxide Preparation for Heterogeneous Catalysis
Author : William Wallace
Publisher : Unknown
Release Date : 2019
Category :
Total pages :129
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The Function of High Surface Area Mesoporous Metal Oxides in Heterogeneous Catalysis and Partial Oxidation of Methane to Methanol in Near Supercritical Acetonitrile

The Function of High Surface Area Mesoporous Metal Oxides in Heterogeneous Catalysis and Partial Oxidation of Methane to Methanol in Near Supercritical Acetonitrile
Author : Tharindu Madusanka Premalal Kankanam Kapuge
Publisher : Unknown
Release Date : 2019
Category : Electronic dissertations
Total pages :129
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Nickel incorporated (mol. 30%), high surface area (423 m2 g-1), mesoporous (3.8-4.3 nm) TiO2, bare NiO, and bare TiO2 were synthesized with surfactant-assisted metal dissolution techniques. Ethanol is successfully converted to higher energy density compounds including hexanol (yield 63%), acetic acid (39%), and furan (54%) with bare titanium dioxide (300-500°C), whereas C10 decanoic acid (63%), acetaldehyde (50%) is synthesized on Ni/TiO2 at different temperatures. Meso-microporous hexagonal and monoclinic defective tungsten oxide (WOx) materials were synthesized using a surfactant-assisted metal dissolution methodology. The C(sp2)-C(sp2) cross-coupling of cyclo-pentene, hexane, and heptene with aromatic compounds was achieved with a maximum of 95% yield in 2 hours at 110°C using (max. TOF 7.9 h-1) proton incorporated WOx. When Li+, Na+, and K+ incorporated WOx were used, the reaction was completely stopped. Lower but significant yield (37%) compared to H-WOx (67%) was observed in the presence of cobalt incorporated WOx Mesoporous spinel cobalt oxide (Co3O4) with fine-tuned pore size distributions (9.6-17.6 nm) were synthesized using a series of nonionic surfactants. Tandem synthesis strategy to synthesize amine homo-coupled imine and amine-alcohol cross-coupled imine was introduced. Light-induced singlet oxygen and hydroxyl radical-mediated reaction mechanism was proposed. Metal-free methane conversion with high methanol yield (17% O2 based) at mild temperatures (275°C) was achieved with sub-supercritical acetonitrile cluster assisted boron nitride initiation mechanism. Experimental and theoretical evidence supporting acetonitrile-O2 cluster formation and oxygen activation have been presented. Reaction temperature, dwell time, methane-oxygen and solvent-oxygen molar ratio were identified as other critical factors controlling the methane activation and methanol yield.

Heterogeneous Catalysis and Metal/metal Oxide Interfaces

Heterogeneous Catalysis and Metal/metal Oxide Interfaces
Author : Uzi Landman,Georgia Institute of Technology. School of Physics. Project no. G-41-Z37
Publisher : Unknown
Release Date : 2003
Category :
Total pages :129
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Surface Properties and Catalysis by Non-Metals

Surface Properties and Catalysis by Non-Metals
Author : J.P. Bonnelle,B. Delmon,E.G. Derouane
Publisher : Springer Science & Business Media
Release Date : 2012-12-06
Category : Science
Total pages :562
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In the field of heterogeneous catalysis. it is convenient to distinguish. in a perfectly unjustified and over··simplified way. bet:leen metal catalysts. 2nd the other catalysts. The fj.J"st are easy to define : they are those in which a reduced metal is the active phase. It is thus easy to circumscribe. by exclusion, the other class namely the "non-metals". We have adopted this definition for the sake of our colleagues working on catalysis by metals, and to avoid a lengthy title like "sm' face pl"operties and catalysts by transi tion metal oxides. sulftdes, carbides, nitriles, etc. Defined in this manner, non-metal catalysts represented, in 1980, 84 wt. % of the industrial heterogeneous catalysts. To be more specific, this proportion corresponds to catalysts which, under the working conditions in the industrial ?lant. contain their catalytically active metallic elements in a non-reduced state. It should however be recalled that most metal catalysts are supported on oxides, which, often, repl'esent over 90% (sometimes 99.4% in the case of the platinum reforming catalysts) of the total weight.

Model Systems in Catalysis

Model Systems in Catalysis
Author : Robert Rioux
Publisher : Springer Science & Business Media
Release Date : 2009-11-11
Category : Science
Total pages :526
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This book is an excellent compilation of cutting-edge research in heterogeneous catalysis and related disciplines – surface science, organometallic catalysis, and enzymatic catalysis. In 23 chapters by noted experts, the volume demonstrates varied approaches using model systems and their successes in understanding aspects of heterogeneous catalysis, both metal- and metal oxide-based catalysis in extended single crystal and nanostructured catalytic materials. To truly appreciate the astounding advances of modern heterogeneous catalysis, let us first consider the subject from a historical perspective. Heterogeneous catalysis had its beginnings in England and France with the work of scientists such as Humphrey Davy (1778–1829), Michael Faraday (1791–1867), and Paul Sabatier (1854–1941). Sabatier postulated that surface compounds, si- lar to those familiar in bulk to chemists, were the intermediate species leading to catalytic products. Sabatier proposed, for example, that NiH moieties on a Ni sur- 2 face were able to hydrogenate ethylene, whereas NiH was not. In the USA, Irving Langmuir concluded just the opposite, namely, that chemisorbed surface species are chemically bound to surfaces and are unlike known molecules. These chemisorbed species were the active participants in catalysis. The equilibrium between gas-phase molecules and adsorbed chemisorbed species (yielding an adsorption isotherm) produced a monolayer by simple site-filling kinetics.

Heterogeneous Catalytic Redox Reactions

Heterogeneous Catalytic Redox Reactions
Author : Vladislav Sadykov,Serguei Tikhov,Lyubov Isupova
Publisher : Walter de Gruyter GmbH & Co KG
Release Date : 2019-10-21
Category : Science
Total pages :255
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The current book brings together cutting-edge research in the area of heterogeneous catalytic redox processes. The first part of the book covers the catalytic properties of transition metal oxides and the techniques for catalysts preparation, such as mechanochemistry, plasmochemistry, hydrothermal treatment, etc. Further the authors focus on mechanisms of heterogeneous redox reactions followed by the overview of industrial applications.