Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides
Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides

Author: Speranta Tanasescu

Publisher: BoD – Books on Demand

Published: 2020-11-04

Total Pages: 104

ISBN-13: 1789854512

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The interrelation among composition, microstructure, and properties of stoichiometric and nonstoichiometric compounds is a major field of research for both scientific and technological reasons. As such, this book focuses on metal oxides, which present a large diversity of electrical, magnetic, optical, optoelectronic, thermal, electrochemical, and catalytic properties, making them suitable for a wide range of applications. By bringing together scientific contributions with special emphasis on the interrelations between materials chemistry, processing, microstructures, and properties of stoichiometric and nonstoichiometric metal oxides, this book highlights the importance of tightly integrating high-throughput experiments (including both synthesis and characterization) and efficient and robust theory for the design of advanced materials.

Structure and Concentration of Point Defects in Selected Spinels and Simple Oxides
Structure and Concentration of Point Defects in Selected Spinels and Simple Oxides

Author: Andrzej Stokłosa

Publisher: CRC Press

Published: 2021-04-09

Total Pages: 626

ISBN-13: 1000352900

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Structure and Concentration of Point Defects in Selected Spinels and Simple Oxides presents diagrams and numerical data of important properties of spinels and oxides based on experimental results published in the literature. The values of many parameters presented can be used for optimization of preparation of new systems, to predict the practical properties of these systems. Applications include electronic devices, new metallic alloys with improved corrosion resistance, new ceramic materials, and novel catalysts, particularly for oxygen evolution and reduction reactions. Organized into four comprehensive parts, the authors present the problem of the structure and concentration of ionic and electronic defects in magnetite and hausmannite, pure and doped with M3+ cations, and in spinels exhibiting magnetic properties and high electric conductance. Additional Features include: Includes 236 figures presenting equilibrium diagrams of point defects and other useful details related to stoichiometric and nonstoichiometric spinels and oxides. Details novel methods of calculation of equilibria involving point defects. Collects scattered data published in nearly 500 original articles since the 1950s on spinels and oxides in one useful volume. Building upon the data presented, this book is an indispensable reference for material scientists and engineers developing new metal or oxide-based systems can easily calculate other useful parameters and compare the properties of different materials to select the best candidates for an intended use.

Chemistry of Non-stoichiometric Compounds
Chemistry of Non-stoichiometric Compounds

Author: Koji Kosuge

Publisher: Oxford University Press

Published: 1994-01-13

Total Pages: 273

ISBN-13: 0191661139

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This unified presentation of the chemistry of non-stoichiometric compounds is the first monograph on the subject for two decades. Based on statistical thermodynamics and structural inorganic chemistry, with descriptions of modern examples and applications, this will be useful to both researchers in industry and undergraduates in solid state chemistry and physics.

Nonstoichiometric Oxides
Nonstoichiometric Oxides

Author: O.T. Soerensen

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 454

ISBN-13: 0323149804

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Nonstoichiometric Oxides discusses the thermodynamic and structural studies of nonstoichiometric oxides. This eight-chapter text also covers the defect-defect interactions in these compounds. The introductory chapters describe the thermodynamic properties of nonstoichiometric oxides in terms of defect complexes using the classical thermodynamic principles and from a statistical thermodynamics point of view. These chapters also include statistical thermodynamic models that indicate the ordered nonstoichiometric phase range in these oxides. The subsequent chapters examine the transport properties, such as diffusion and electrical conductivity. Diffusion theories and experimental diffusion coefficients for several systems, as well as the electrical properties of the highly defective ionic and mixed oxide conductor, are specifically tackled in these chapters. The concluding chapters present the pertinent results obtained in nonstoichiometric oxide structural studies using high-resolution electron microscopy and X-ray and neutron diffraction. Inorganic chemists and inorganic chemistry teachers and students will greatly appreciate this book.

Non-Stoichiometric Oxides of 3d-Metals
Non-Stoichiometric Oxides of 3d-Metals

Author: Andrzej Stokłosa

Publisher: Trans Tech Publications Ltd

Published: 2015-03-18

Total Pages: 577

ISBN-13: 3038266086

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In the present work, in Part I, new elements widening the bases of the defects theory are shown; particularly, this work discusses the mechanism of the formation of defects as a result of elementary processes; the work also presents a description of the equilibrium state by one equation, taking into account the concentrations of defects and their changes during the process of reaching the equilibrium. The equation relates the concentrations of defects, dependent on the standard Gibbs energies of their formation, with the equilibrium pressure of oxygen. The obtained relations and the discussion have lead to the development of a method for determination of complete diagrams of concentrations of the point defects, which allows taking into account the minority defects. Part II presents the results of the calculations of the diagrams of point defects’ concentrations for a series of pure and doped oxides of transition metals 3d, with different composition (M/O ratio), crystallographic structure and point defects’ structure. A critical analysis of the results of the studies of the deviation from the stoichiometry and the electrical conductivity, obtained (so far) by most research groups has been also performed. A new interpretation of these results, concerning concentrations and types of ionic defects present has been performed and the mobility of electronic defects and its dependence on the temperature and oxygen pressure have been determined.

Metal Oxides in Heterogeneous Catalysis
Metal Oxides in Heterogeneous Catalysis

Author: Jacques C. Vedrine

Publisher: Elsevier

Published: 2018-01-11

Total Pages: 620

ISBN-13: 0128116323

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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

Solid Oxide Fuels Cells: Facts and Figures
Solid Oxide Fuels Cells: Facts and Figures

Author: John T.S. Irvine

Publisher: Springer Science & Business Media

Published: 2012-11-02

Total Pages: 232

ISBN-13: 1447144562

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Solid Oxide Fuel Cells (SOFCs) operate at high temperatures allowing more fuel flexibility and also useful heat output and so increase total efficiency, but does give some interesting engineering challenges. Solid Oxide Fuels Cells: Facts and Figures provides clear and accurate data for a selection of SOFC topics from the specific details of Ni cermet anodes, chemical expansion in materials, and the measuring and modelling of mechanical stresses, to the broader scope of the history and present design of cells, to SOFC systems and the future of SOFC. Celebrating Ulf Bossel’s work on Solid Oxide Fuel Cells, and especially his running of the European Fuel Cell Forum, Solid Oxide Fuels Cells: Facts and Figures covers important topics on the way including intermediate temperature fuel cells, metal supported fuel cells and both new materials and engineering solutions to some of the challenges of getting SOFC to market. The chapters are based on the special plenary talks given by some of the most respected and talented people in the field at the 2010 European SOFC Forum in Luzern and the title for this book comes from the report produced by Ulf for the IEA “Final Report on SOFC Data, Facts and Figures”, Swiss Federal Office of Energy, Berne, 1992. The comprehensive nature of Solid Oxide Fuels Cells: Facts and Figures makes it a key resource of SOFC topics for students, lecturers, researchers and industry practitioners alike.