Author: Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 364
Book Description
Structure-activity and Selectivity Relationships in Heterogeneous Catalysis
Author: Structure-Activity and Selectivity Relationships in Heterogeneous Catalysis
Author: R.K. GrasselliPublisher: Elsevier
ISBN: 0080887198
Category : Science
Languages : en
Pages : 375
Book Description
Structure plays an important role in heterogeneous catalysis. It provides a framework for the arrangement and stragetic placement of key catalytic elements, hosting them in a prescribed manner so that their respective electronic properties can exhibit their desired catalytic functions and mutual interactions. Under reaction conditions these framework structures and their catalytic guests undergo dynamic processes becoming active participants of the overall catalytic process. They are not mere static geometric forms. The dynamics of catalytic structures are particularly vivid in selective oxidation catalysis where the lattice of a given catalytic solid partakes as a whole, not only its surface, in the redox processes of the reaction. The catalyst becomes actually a participating reagent. By proper choice of key catalytic elements and their host structures, preferred catalytic pathways can be selected over less desired ones. However, not only in selective redox catalysis does structure play an important role, its importance is also well documented, among others, in shape selective zeolite catalysis, enantioselective hydrogenation and hydrodesulfurization. The contributions presented in this book address the dynamic character of the solid state under catalytic reaction conditions. By relating structure to activity and selectivity in heterogeneous catalysis our understanding of such correlations has been significantly enhanced through the use of sophisticated spectroscopic means, surface science and modeling.
Structure-activity and Selectivity Relationships in Heterogeneous Catalysis
Author: Structure-activity Relationships in Heterogeneous Catalysis
Author: American Chemical Society. Division of Petroleum ChemistryPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Structure-activity Relationships in Heterogeneous Catalysts for Hydrocarbon Conversions
Author: Maricruz Sanchez SanchezPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Implication of Defects in the Bulk Structure of Heterogeneous Catalysts for Structure Activity Relationships
Author: Catalysis by Materials with Well-Defined Structures
Author: Zili WuPublisher: Academic Press
ISBN: 0128013400
Category : Technology & Engineering
Languages : en
Pages : 393
Book Description
Catalysis by Materials with Well-Defined Structures examines the latest developments in the use of model systems in fundamental catalytic science. A team of prominent experts provides authoritative, first-hand information, helping readers better understand heterogeneous catalysis by utilizing model catalysts based on uniformly nanostructured materials. The text addresses topics and issues related to material synthesis, characterization, catalytic reactions, surface chemistry, mechanism, and theoretical modeling, and features a comprehensive review of recent advances in catalytic studies on nanomaterials with well-defined structures, including nanoshaped metals and metal oxides, nanoclusters, and single sites in the areas of heterogeneous thermal catalysis, photocatalysis, and electrocatalysis. Users will find this book to be an invaluable, authoritative source of information for both the surface scientist and the catalysis practitioner - Outlines the importance of nanomaterials and their potential as catalysts - Provides detailed information on synthesis and characterization of nanomaterials with well-defined structures, relating surface activity to catalytic activity - Details how to establish the structure-catalysis relationship and how to reveal the surface chemistry and surface structure of catalysts - Offers examples on various in situ characterization instrumental techniques - Includes in-depth theoretical modeling utilizing advanced Density Functional Theory (DFT) methods
Fundamental Concepts in Heterogeneous Catalysis
Author: Jens K. NørskovPublisher: John Wiley & Sons
ISBN: 1118888952
Category : Technology & Engineering
Languages : en
Pages : 228
Book Description
This book is based on a graduate course and suitable as a primer for any newcomer to the field, this book is a detailed introduction to the experimental and computational methods that are used to study how solid surfaces act as catalysts. Features include: First comprehensive description of modern theory of heterogeneous catalysis Basis for understanding and designing experiments in the field Allows reader to understand catalyst design principles Introduction to important elements of energy transformation technology Test driven at Stanford University over several semesters
Heterogeneous Catalysis of Mixed Oxides
Author: Makoto MisonoPublisher: Elsevier Inc. Chapters
ISBN: 0128081090
Category : Science
Languages : en
Pages : 87
Book Description
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 Photocatalysis
Author: M. SchiavelloPublisher:
ISBN:
Category : Science
Languages : en
Pages : 218
Book Description
Photocatalysis is a reaction which is accelerated by light while a heterogeneous reaction consists of two phases ( a solid and a liquid for example). Heterogeneous Photocatalysis is a fast developing science which to date has not been fully detailed in a monograph. This title discusses the basic principles of heterogeneous photocatalysis and describes the bulk and surface properties of semiconductors. Applications of various types of photoreactions are described and the problems related to the modeling and design of photoreactors are covered.