Download or read book 8th International Congress on Catalysis Cluster derived catalysts active phase support interactions catalysis for synthesis of chemicals written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of The 8th International Congress on Catalysis Cluster derived catalysts active phase support interactions catalysis for synthesis of chemicals written by and published by . This book was released on 1984 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cluster derived Catalysts Active Phase support Interactions Catalysis for Synthesis of Chemicals written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bimetallic Catalysts written by John H. Sinfelt and published by Wiley-Interscience. This book was released on 1983-09-29 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents an account of the research on bimetallic catalysts. Focuses attention on the possibility of influencing the selectivity of chemical transformations on metal surfaces and preparing metal alloys in a highly dispersed state. Covers the validation and elucidation of the bimetallic cluster concept. Includes figures and tables.
Download or read book Metal Clusters in Catalysis written by Bruce C. Gates and published by Elsevier Publishing Company. This book was released on 1986 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on metal clusters (compounds with metal-metal bonds) has undergone explosive growth and the subject is now perhaps one of the hottest'' topics in organometallic chemistry. The prospect of catalytic applications has motivated a large part of the research mentioned in this book - the long term goal being to exploit the unique properties of metal clusters to prepare catalysts with new activities and selectivities. This is the first book to address the role of metal clusters in catalysis. The coverage is up-to-date and is particularly comprehensive, ranging from molecular chemistry of clusters (synthesis, structure, thermochemistry, reactivity, and homogeneous catalysis) to supported clusters (molecular analogues on polymers, and metal oxides and metals in zeolite cages). Preparation by methods of organometallic surface chemistry and metal atom chemistry and characterization of surface structures by physical methods are highlighted. Concepts unifying metal cluster chemistry and the chemistry of metal surfaces are elucidated. Of particular value to the user will be the cluster and subject indexes. The cluster index is organized in alphabetical order according to the metal.
Download or read book Catalysis written by James Spivey and published by Royal Society of Chemistry. This book was released on 2020-02-05 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysts are required for a variety of applications and researchers are increasingly challenged to find cost effective and environmentally benign catalysts to use. This volume looks at modern approaches to catalysis and reviews the extensive literature. Chapters highlight reactions active under oxidative coupling of methane conditions and how they are interlinked, heterogeneous nickel catalysts and their use in laboratory and industry, the reaction mechanism of heterogeneous catalysis with the surface science probe, the concepts of electroless deposition (ED) methods for preparation of true bimetallic catalysts, the general subject of metal-support interactions occurring over ruthenium-based catalysts and benzene as the target volatile organic compound (VOC). Appealing broadly to researchers in academia and industry, these illustrative chapters bridge the gap from academic studies in the laboratory to practical applications in industry not only for catalysis field but also for environmental protection. The book will be of great benefit to any researcher wanting a succinct reference on developments in this area now and looking to the future.
Download or read book Supported Catalysts and Their Applications written by David C Sherrington and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need to improve both the efficiency and environmental acceptability of industrial processes is driving the development of heterogeneous catalysts across the chemical industry, including commodity, specialty and fine chemicals and in pharmaceuticals and agrochemicals. Drawing on international research, Supported Catalysts and their Applications discusses aspects of the design, synthesis and application of solid supported reagents and catalysts, including supported reagents for multi-step organic synthesis; selectivity in oxidation catalysis; mesoporous molecular sieve catalysts; and the use of Zeolite Beta in organic reactions. In addition, the two discrete areas of heterogeneous catalysis (inorganic oxide materials and polymer-based catalysts) that were developing in parallel are now shown to be converging, which will be of great benefit to the whole field. Providing a snapshot of the state-of-the-art in this fast-moving field, this book will be welcomed by industrialists and researchers, particularly in the agrochemicals and pharmaceuticals industries.
Download or read book Supported Catalysts and Their Applications written by D. C. Sherrington and published by Royal Society of Chemistry. This book was released on 2001 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings, held on 2-6 July 2000 at the University of St. Andrews, UK
Download or read book Synthesis of Solid Catalysts written by Krijn P. de Jong and published by John Wiley & Sons. This book was released on 2009-08-04 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical book combines recent progress with a discussion of the general aspects of catalyst preparation. The first part deals with the basic principles of solid catalyst preparation, explaining the main aspects of sol-gel chemistry and interfacial chemistry, followed by such techniques as co-precipitation and immobilization. New tools for catalyst preparation research, including microspectroscopy and high-throughput experimentation, are also taken into account. The second part heightens the practical relevance by providing six case studies on such topics as the preparation of zeolites, hydrotreating catalysts, methanol catalysts and gold catalysts
Download or read book Structurally Well defined Supported Iridium Cluster Catalysts written by Ailian Zhao and published by . This book was released on 1996 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Cluster Derived Supported Bimetallic Catalysts written by and published by . This book was released on 2008 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: New procedures have been developed for synthesizing di- and tri-metallic cluster complexes. The chemical properties of the new complexes have been investigated, particularly toward the activation of molecular hydrogen. These complexes were then converted into bi- and tri-metallic nanoparticles on silica and alumina supports. These nanoparticles were characterized by electron microscopy and were then tested for their ability to produce catalytic hydrogenation of unsaturated hydrocarbons and for the preferential oxidation of CO in the presence of hydrogen. The bi- and tri-metallic nanoparticles exhibited far superior activity and selectivity as hydrogenation catalysts when compared to the individual metallic components. It was found that the addition of tin greatly improved the selectivity of the catalysts for the hydrogenation of polyolefins. The addition of iron improves the catalysts for the selective oxidation of CO by platinum in the presence of hydrogen. The observations should lead to the development of lower cost routes to molecules that can be used to produce polymers and plastics for use by the general public and for procedures to purify hydrogen for use as an alternative energy in the hydrogen economy of the future.
Download or read book 8th International Congress on Catalysis Catalysis for reaction with synthesis gas catalysis for upgrading crude oil studies on the working catalysis written by and published by . This book was released on 1984 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalytic Activity of Physically Deposited Metal Clusters and Their Atomic Structure Study written by Rongsheng Cai and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deposition of preformed clusters onto suitable support materials represents a new technique for the precision synthesis of heterogeneous catalysts. Benefitting from the successful scale-up of the cluster production, this thesis directly explores the catalytic performance of physically produced metal clusters for liquid-phase and vapour-phase model reactions, particularly under realistic conditions. The catalyst powders used in the experiments were produced using two kinds of cluster beam sources: a magnetron sputtering gas condensation cluster source and a matrix assembly cluster source (MACS). The cluster atomic structure, chemical composition and size evolution due to the reaction were characterized by aberration-corrected scanning transmission electron microscopy (STEM), coupled with energy dispersive X-ray spectroscopy (EDS), and correlated with the cluster chemical activities. In the first part, Au/Cu binary clusters with variable controlled composition were deposited onto magnesium oxide supports using a magnetron sputtering gas condensation cluster source. It was found that Au/Cu cluster catalysts are highly active for the liquid-phase 4-nitrophenol reduction. Electron microscopy revealed that the Au/Cu clusters produced have an alloy structure, which results in a random distribution of Au and Cu atoms on the cluster surface. Combined with theoretical calculations of the binding energies, the interplay between Au and Cu atoms at the cluster surface, resulting in an enhanced catalytic activity, is proposed. In the second part, we demonstrated the catalyst preparation with a new type of cluster beam source, MACS. Pd nanoclusters were deposited onto diced carbon tape supports and used for catalyzing vapour-phase selective 1-pentyne hydrogenation. The catalysis results showed that the Pd cluster catalyst from MACS is more active (per unit weight) than the Pd reference sample synthesized by traditional wet impregnation. Cluster size evolution before and after reaction suggested that the superior activity derived from the smaller cluster size and better stability against sintering compared to the Pd reference sample. In addition, no synergetic effect was found in Pd/Au clusters. The observed similar cluster activity (per surface atom) for Pd and Pd/Au cluster catalysts may be due to the oxidation in air, which could drive Pd atoms to the cluster surface, thus leading to a Pd cluster surface as pure Pd clusters. Finally, a new method to prepare metal colloids from the cluster beam technique is introduced, in which metal clusters made using MACS were directly deposited onto soluble polymer films, followed by dissolving the polymer films in suitable solvents. The Pd colloids produced were also used to catalyze the reduction of 4-nitrophenol to demonstrate the catalytic performance. Only a small activity was observed which was attributed to the protecting polymers blocking a high fraction of the active sites on the cluster surface.
Download or read book Atomically Precise Methods for Synthesis of Solid Catalysts written by Sophie Hermans and published by Royal Society of Chemistry. This book was released on 2015 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: With techniques bridging the gap between surface science and heterogeneous catalysis the book presents a tool-kit for anyone wishing to prepare and define solid catalysts.
Download or read book 8th International Congress on Catalysis New methods in catalysis research dynamics of catalytic reactions contribution of catalysis to ensuring the energy requirements catalysis and environmental protection written by and published by . This book was released on 1984 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 8th International Congress on Catalysis written by and published by . This book was released on 1984 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
