Chemical Reactions of Small Molecules on Metal Surfaces PDF Download
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Author: Mark Francis Lynch
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Mark Francis Lynch
Publisher:
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Category :
Languages : en
Pages :
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Author: Hugo Celio
Publisher:
ISBN:
Category :
Languages : en
Pages : 544
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Author: Markus Wahl
Publisher: Cuvillier Verlag
ISBN: 3867271399
Category :
Languages : en
Pages : 23
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Author:
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ISBN:
Category :
Languages : en
Pages : 7
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The goal of this study is to gain a better understanding of metal-catalyzed reactions by examining in detail the dynamics of molecule-metal interactions. Much effort has been focused on treating the molecule quantum mechanically when necessary, and including the effects of finite surface temperature. Recently developed time-dependent quantum techniques have been used to compute the dissociative sticking probability of H[sub 2], HD, and D[sub 2] on Cu and Ni surfaces. All molecular degrees of freedom can now be included either quantum mechanically or classically. The dependence upon translational and internal molecular energy, the angle and site of surface impact, and the details of the molecule-metal interaction potential have been examined. Similar techniques have been used to study the Eley-Rideal mechanism for the recombinative desorption of adsorbed H and D atoms with gas-phase H and D atoms. Several useful methods for coupling gas particles to the thermal vibrations of the solid have been developed and used in studies of energy transfer and sticking. The trapping of H[sub 2] and other diatomics in weakly bound molecular precursors to dissociative adsorption is also of interest.
Author: Paul Anthony Samson
Publisher:
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Category :
Languages : en
Pages :
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Author: Dennis R. Salahub
Publisher: Springer Science & Business Media
ISBN: 9401128227
Category : Science
Languages : en
Pages : 428
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Metal-ligand interactions are currently being studied in different fields, from a variety of points of view, and recent progress has been substantial. Whole new classes of compounds and reactions have been found; an arsenal of physical methods has been developed; mechanistic detail can be ascertained to an increasingly minute degree; and the theory is being developed to handle systems of ever-growing complexity. As usual, such multidisciplinarity leads to great opportunities, coupled with great problems of communication between specialists. It is in its promotion of interactions across these fields that Metal-Ligand Interactions: From Atoms, to Clusters, to Surfaces makes its timely contribution: the tools, both theoretical and experimental, are highly developed, and fundamental questions remain unanswered. The most fundamental of these concerns the nature of the microscopic interactions between metal atoms (clusters, surfaces) and ligands (atoms, molecules, absorbates, reagents, products) and the changes in these interactions during physical and chemical transformation. In Metal-Ligand Interactions, leading experts discuss the following, vital aspects: ab initio theory, semi-empirical theory, density functional theory, complexes and clusters, surfaces, and catalysis.
Author: Brian Michael Naasz
Publisher:
ISBN:
Category :
Languages : en
Pages : 324
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Author: James I. Duncan
Publisher:
ISBN: 9781604568981
Category : Chemical reactions
Languages : en
Pages : 0
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Chemical reactions on catalytic surfaces play a vital role in many industrial operations, such as the production of artificial fertilisers. Surface chemistry can even explain the destruction of the ozone layer, as vital steps in the reaction actually take place on the surfaces of small crystals of ice in the stratosphere. The semiconductor industry is yet another area that depends on knowledge of surface chemistry. It was thanks to processes developed in the semiconductor industry that the modern science of surface chemistry began to emerge in the 1960s. This science requires advanced high-vacuum experimental equipment as the aim is to observe how individual layers of atoms and molecules behave on the extremely pure surface of a metal, for instance. It must therefore be possible to determine exactly which element is admitted to the system. Contamination could jeopardise all the measurements. Acquiring a complete picture of the reaction requires great precision and a combination of many different experimental techniques. This book presents the latest research in the field.
Author: Udo H. Brinker
Publisher: John Wiley & Sons
ISBN: 1119957109
Category : Science
Languages : en
Pages : 477
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The inclusion of small guest molecules within suitable host compounds results in constrained systems that imbue novel properties upon the incarcerated organic substrates. Supramolecular tactics are becoming widely employed and this treatise spotlights them. Often, the impact of encapsulation on product formation is substantial. The use of constrained systems offers the means to steer reactions along desired pathways. A broad overview of various supramolecular approaches aimed to manipulate chemical reactions are featured. The following topics are covered in detail: - general concepts governing the assembly of the substrate with the reaction vessel - preparation of molecular reactors - stabilization of reactive intermediates - reactions in water, in organic solvents, and in the solid state - photochemical reactions - reactions with unusual regioselectivity Molecular Encapsulation: Organic Reactions in Constrained Systems is an essential guide to the art of changing the outcome and the selectivity of a chemical reaction using nano-sized reaction vessels. It will find a place on the bookshelves of students and researchers working in the areas of supramolecular chemistry, nanotechnology, organic and pharmaceutical chemistry, and materials science as well.
Author: Steven Joseph Gulding
Publisher:
ISBN:
Category :
Languages : en
Pages : 326
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