Download or read book Effect of Morphology on Catalytic Activity written by Gabor A. Somorjai and published by . This book was released on 1976 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Morphology on Catalytic Activity Hydrocarbon Reforming Reactions on Platinum Crystal Surfaces written by G. A. Somorjai and published by . This book was released on 1976 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last 50 years, one of the objectives of heterogeneous catalysis research has been to identify the surface atoms, the active sites, which catalyze each step in a reaction of interest. In general, the technique used is to vary the surface structure of the catalyst in a systematic way, and to observe the changes in activity and selectivity that may result. Three forms of metal catalysts have been used in these studies: Metal particles dispersed on porous supports, metal films and metal crystals. Crystals are used because their surface morphology can be determined with electron diffraction methods, and various structural features can be introduced in a controlled manner. In this work, five different faces of platinum single crystals were used to investigate the catalytic activity of three surface features: Flat, close-packed planes of metal atoms, edge atoms present at the termination of a flat plane and corner atoms present at kinks, or zig-zags, in atomic steps. These may be thought of as models of atom groupings which may be present on metal particles in industrial catalysts. Several hydrocarbon-hydrogen reactions, representative of those that occur in commercial petroleum reforming processes, were studied.
Download or read book Morphological Compositional and Shape Control of Materials for Catalysis written by Paolo Fornasiero and published by Elsevier. This book was released on 2017-05-23 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Morphological, Compositional, and Shape Control of Materials for Catalysis, Volume 177, the latest in the Studies in Surface Science and Catalysis series, documents the fast-growing developments in the synthesis, characterization, and utilization of nanostructures for catalysis. The book provides essential background on using well-defined materials for catalysis and presents exciting new paradigms in the preparation and application of catalytic materials, with an emphasis on how structure determines catalytic properties. In addition, the book uniquely features discussions on the future of the field, with ample space for future directions detailed in each chapter. - Presents the latest paradigms in the preparation and application of catalytic materials - Provides essential background on using well-defined materials for catalysis - Features discussion of future directions at the end of each chapter
Download or read book Catalysis by Materials with Well Defined Structures written by Zili Wu and published by Academic Press. This book was released on 2015-03-26 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Fine Chemicals through Heterogeneous Catalysis written by R. A. Sheldon and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, the chemical industry is under increased pressure to develop cleaner production processes and technologies. Much effort is devoted to the development of heterogeneous catalysts and their application in industrial-scale organic synthesis. This handbook concentrates on current attempts, focusing on fine chemical production. With contributions from an impressive array of international experts, this is essential reading for everyone interested in the advances in this field.
Download or read book Catalysis by Microporous Materials written by H.K. Beyer and published by Elsevier. This book was released on 1995-05-19 with total page 811 pages. Available in PDF, EPUB and Kindle. Book excerpt: ZEOCAT '95 is the eleventh in the series of symposia devoted to special fields of zeolite chemistry. Six plenary lectures, forty oral and forty-two poster presentations were included in the program. The accepted papers cover every aspect of catalysis on microporous materials. A significant number of the contributions describe the synthesis, modification, instrumental and chemical characterisation of zeolites and other micro- and mesoporous materials. Catalytic reactions involve hydrocarbon cracking, nucleophilic aromatic substitution, methanol to hydrocarbon conversion, hydration of acetylene, various alkylation reactions, redox transformations, Claisen rearrangement, etc.
Download or read book Enzyme Biocatalysis written by Andrés Illanes and published by Springer Science & Business Media. This book was released on 2008-06-19 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was written with the purpose of providing a sound basis for the design of enzymatic reactions based on kinetic principles, but also to give an updated vision of the potentials and limitations of biocatalysis, especially with respect to recent app- cations in processes of organic synthesis. The ?rst ?ve chapters are structured in the form of a textbook, going from the basic principles of enzyme structure and fu- tion to reactor design for homogeneous systems with soluble enzymes and hete- geneous systems with immobilized enzymes. The last chapter of the book is divided into six sections that represent illustrative case studies of biocatalytic processes of industrial relevance or potential, written by experts in the respective ?elds. We sincerely hope that this book will represent an element in the toolbox of gr- uate students in applied biology and chemical and biochemical engineering and also of undergraduate students with formal training in organic chemistry, biochemistry, thermodynamics and chemical reaction kinetics. Beyond that, the book pretends also to illustrate the potential of biocatalytic processes with case studies in the ?eld of organic synthesis, which we hope will be of interest for the academia and prof- sionals involved in R&D&I. If some of our young readers are encouraged to engage or persevere in their work in biocatalysis this will certainly be our more precious reward.
Download or read book The Effects of Experimental Conditions on Morphology and Catalytic Activity of Sol gel Laccase written by Fadzillah Muhidin and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalysis Looks to the Future written by National Research Council and published by National Academies Press. This book was released on 1992-02-01 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impact of catalysis on the nation's economy is evidenced by the fact that catalytic technologies generate U.S. sales in excess of $400 billion per year and a net positive balance of trade of $16 billion annually. This book outlines recent accomplishments in the science and technology of catalysis and summarizes important likely challenges and opportunities on the near horizon. It also presents recommendations for investment of financial and human resources by industry, academe, national laboratories, and relevant federal agencies if the nation is to maintain continuing leadership in this fieldâ€"one that is critical to the chemical and petroleum processing industries, essential for energy-efficient means for environmental protection, and vital for the production of a broad range of pharmaceuticals.
Download or read book Coefficients for Calculating Thermodynamic and Transport Properties of Individual Species written by Bonnie J. McBride and published by . This book was released on 1993 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Nanomaterials for Catalysis and Energy written by Vladislav A. Sadykov and published by Elsevier. This book was released on 2018-08-27 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Nanomaterials for Catalysis and Energy: Synthesis, Characterization and Applications outlines new approaches to the synthesis of nanomaterials (synthesis in flow conditions, laser electrodispersion of single metals or alloys on carbon or oxide supports, mechanochemistry, sol-gel routes, etc.) to provide systems with a narrow particle size distribution, controlled metal-support interaction and nanocomposites with uniform spatial distribution of domains of different phases, even in dense sintered materials. Methods for characterization of real structure and surface properties of nanomaterials are discussed, including synchrotron radiation diffraction and X-ray photoelectron spectroscopy studies, neutronography, transmission/scanning electron microscopy with elemental analysis, and more. The book covers the effect of nanosystems' composition, bulk and surface properties, metal-support interaction, particle size and morphology, deposition density, etc. on their functional properties (transport features, catalytic activity and reaction mechanism). Finally, it includes examples of various developed nanostructured solid electrolytes and mixed ionic-electronic conductors as materials in solid oxide fuel cells and asymmetric supported membranes for oxygen and hydrogen separation. - Outlines synthetic and characterization methods for nanocatalysts - Relates nanocatalysts' properties to their specific applications - Proposes optimization methods aiming at specific applications
Download or read book Morphological and Chemical Characterization of Catalysts Produced Via the Thermal Decomposition of Iron Pentacarbonyl written by Jonathan Phillips and published by . This book was released on 1981 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Catalytic Materials Current Status and Future Progress written by José Manuel Domínguez-Esquivel and published by Springer Nature. This book was released on 2019-10-02 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents advances in computational methods, experimental synthesis, and advanced characterizations for novel catalytic materials. The authors show how catalytical materials can be used for various engineering oil & gas applications – mainly in low contaminants fuel production. All contributors, describe in detail novel experimental and theoretical techniques techniques and concepts for synthesis, evaluation and scaling catalytic materials and research advances in evaluation, extensive characterization and theoretical modeling using computer assisted methods and algorithms. Describes computational methods, experimental synthesis and advanced characterization for novel catalytic materials; Examines catalytic materials and corresponding engineering applications with a focus on low contaminant fuel production and derivatives; Covers the application of computer assisted quantum mechanical for fundamental understanding of electronic structure of molecular dimension catalytic materials.
Download or read book Functionalized Nanomaterials for Catalytic Application written by Chaudhery Mustansar Hussain and published by John Wiley & Sons. This book was released on 2021-07-21 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functionalized Nanomaterials for Catalytic Application
Download or read book High Temperature Polymer Electrolyte Membrane Fuel Cells written by Qingfeng Li and published by Springer. This book was released on 2015-10-15 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive review of high-temperature polymer electrolyte membrane fuel cells (PEMFCs). PEMFCs are the preferred fuel cells for a variety of applications such as automobiles, cogeneration of heat and power units, emergency power and portable electronics. The first 5 chapters of the book describe rationalization and illustration of approaches to high temperature PEM systems. Chapters 6 - 13 are devoted to fabrication, optimization and characterization of phosphoric acid-doped polybenzimidazole membranes, the very first electrolyte system that has demonstrated the concept of and motivated extensive research activity in the field. The last 11 chapters summarize the state-of-the-art of technological development of high temperature-PEMFCs based on acid doped PBI membranes including catalysts, electrodes, MEAs, bipolar plates, modelling, stacking, diagnostics and applications.
Download or read book Nanocatalysis written by Ulrich Heiz and published by Springer Science & Business Media. This book was released on 2007-01-10 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocatalysis, a subdiscipline of nanoscience, seeks to control chemical reactions by changing the size, dimensionality, chemical composition, and morphology of the reaction center and by changing the kinetics using nanopatterning of the reaction center. This book offers a detailed pedagogical and methodological overview of the field. Readers discover many examples of current research, helping them explore new and emerging applications.
Download or read book Nanoparticle Design and Characterization for Catalytic Applications in Sustainable Chemistry written by Rafael Luque and published by Royal Society of Chemistry. This book was released on 2019-10-05 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an introduction to the preparation and characterisation of nanomaterials and their design for specific catalytic applications.
