Download or read book Chemisorption of Probe Molecules written by and published by Elsevier. This book was released on 1990-07-19 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume concentrates on catalyst surfaces. The interaction of adsorbed molecules, mostly on heterogenous catalysts, although some reference to model catalysts is also made, is discussed here. Vibrational (infrared and electron energy loss spectroscopies, magnetic resonances (nuclear and electron spin) and thermal desorption methods have been included in this latter category. The reader will find also a comparison of these well established methods with their recent developments which make them much more attractive. Therefore, researchers working in the catalysis field will find much to interest them in this book.
Download or read book Chemisorption and Magnetization written by P. W. Selwood and published by Elsevier. This book was released on 2012-12-02 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemisorption and Magnetization focuses on particle size determination and on the number of adsorbent atoms affected when any molecule is adsorbed on a surface. This book examines the adsorption of a molecule on the surface of a ferromagnetic solid that produces a change in the magnetization of the solid. Organized into 12 chapters, this book starts with an overview of the experimental methods used for studying chemisorption and magnetization, which are applicable in granulometry. This text then discusses the measurement of saturation magnetization in a ferromagnetic substance in the form of small particles. Other chapters consider the conditions in a typical nickel–silica hydrogenation catalyst. This text examines as well the magnetization at moderate fields and near room temperature. The final chapter deals with the properties and complexities of palladium, platinum, and nickel. Students and researchers interested in heterogeneous catalysis and related areas will find this book extremely useful.
Download or read book Theory of Chemisorption written by J. R. Smith and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theory of the chemical interaction of molecules with surfaces has advanced handsomely in the last few years. This is due in part to the application of the entire arsenal of bulk solid-state theory and molecular quantum chemistry methods. This considerable activity was stimulated by an outpouring of experimental data, particularly of photoemission spectra. In many cases the theoretical techniques are now such that accurate, atomistic pictures of chemisorption phenomena are computed from first principles. This level of capability has been reached only recently, and has not been described anywhere in a comprehensive manner. The purpose of this monograph is to review these recent advances and, at the same time, to indicate a number of important questions which have not been answered. We discuss chemisorption on oxides, semiconductors, and both simple and transition metals. Solid surfaces as well as clusters are considered. While the review should be valuable to workers in the field, care has been taken to make the chapters understandable to the nonspecialist.
Download or read book Chemisorption written by Gerd Wedler and published by Butterworth-Heinemann. This book was released on 1976 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemisorption written by B. M. W. Trapnell and published by . This book was released on 1955 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemisorption of Gases on Metals written by Frederick Clifford Tompkins and published by . This book was released on 1978 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adsorption of Molecules at Metal Electrodes written by Jacek Lipkowski and published by Wiley. This book was released on 1992-08-05 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise introduction to molecular adsorption at electrified interfaces summarizes the past decade's advances in the field. A balanced selection of chapters describes thermodynamic, dynamic and molecular properties of adsorbed molecules, written by physicists, chemists, experimentalists and theorists.
Download or read book The Use of Chemical Probe Molecules to Investigate the Nature of Adsorbents and Solvents written by Donald Christopher Ferris and published by . This book was released on 1994 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Science written by Kurt W. Kolasinski and published by John Wiley & Sons. This book was released on 2002-03-29 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers a comprehensive, modern introduction to the subject, taking a truly pedagogical approach. This text will provide the reader with a well-rounded understanding, not only of how chemistry works at surfaces, but also how to understand and probe the dynamics of surface reactions.
Download or read book The Molecular Theory of Adsorption in Porous Solids written by Yury Konstantinovich Tovbin and published by CRC Press. This book was released on 2017-10-17 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the adsorption phenomenon the substances from the external environment the gas or liquid are absorbed by a solid surface (adsorbent). Adsorption is used to separate gaseous and liquid mixtures, for drying and purification of gases and liquids. This reference broadly explores the calculation of the equilibrium and dynamic characteristics of adsorption in porous bodies at the molecular level. Two new theories of statistical physics are presented, both developed by the author for the consistent description of the equilibrium distribution of molecules and dynamics of flows in complex porous materials to be able to solve a wide range of practical tasks in the development of new technologies.
Download or read book Chemisorption and Reactions on Metallic Films written by J. R. Anderson and published by . This book was released on 1971 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemisorption And Reactions On Metallic Films V2 ...
Download or read book The reaction of C1 molecules and coadsorption of probe molecules with ammonia on Ru 001 written by Ying Zhou and published by . This book was released on 1988 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Testing Site Size Requirements in Chemisorption written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ''Ensemble requirements'' in surface chemistry refer to the number and shape of contiguous empty sites necessary for chemisorption of a particular molecule. Ensemble effects can play a major role in directing the course of surface reactions, leading, for example, to dramatic changes in catalytic selectivity when the active metal component is diluted upon alloying with an inert metal. We will review here fundamental surface science studies that have attempted to probe this site size requirement by diluting active sites on a single crystal surface with an inert metal overlayer. We will emphasize recent results in our lab on the interaction of simple molecules (CO, H2, O2) with Cu-, Ag-, and Bi-dosed Pt(111). Theoretical models based upon Monte-Carlo simulations will be summarized which, when compared to such data, allow more accurate determination of ensemble sizes. These models predict uptake curves that deviate strongly from the commonly used (1-theta)/sup A/ law (A = number of sites in ensemble), which is valid only for an array of isolated ensembles. 32 refs., 3 figs.
Download or read book Spectroscopic Characterization of Heterogeneous Catalysts Part B Chemisorption of Probe Molecules written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Activated Chemisorption of Molecules written by Charles N. Stewart and published by . This book was released on 1972 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dissociative chemisorption of polyatomic gases on crystal surfaces has long been reported as a slow process. Using molecular beam techniques, the authors have investigated the adsorption of methane on clean rhodium surfaces and provided a clue to the mechanism of activation. (Author).
Download or read book Catalysis written by John R. Anderson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: A very wide range of catalytic conversions find industrial use in organic process chemistry. The scale of the ope rations varies enormously from very high volume pro cesses to specialty chemical preparations. Many of these processes are functional group conversions or class reac tions, and the more important of these will receive detailed treatment in specific chapters throughout this series. Nevertheless, the scope is very broad, and it is all too easy for the non-specialist to become lost in a large volume of detail. To try to avoid this, the first chapter in this volume, by Dr. Paul N. Rylander provides a working summary of the more important catalytic con versions of this type. In doing this, he also gives some valuable comments about catalyst selection, together with an indication of the reaction conditions used in practice, the more important of the problems usually encountered, and comments about the most important of the mechanistic features. It has long been recognized that an understanding of the chemical nature of solid surfaces is fundamental to an understanding of catalytic processes which may take place upon them. This question may be approached in two distinct ways. One is via surface crystallography which focuses attention upon long range order. The second concentrates upon the concept of the surface functional group where attention is mainly upon the chemistry characteristic of a particular localized atomic arrangement at the surface. In practice, of course, there exists a continuum between these idealized extremes.
Download or read book Probing Polymer Adsorption Using an Emissive Semiconductor Substrate written by Fazila Seker and published by . This book was released on 1999 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
