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The Structure And Activity Of Supported Metal Catalysts
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Book Synopsis The Structure and Activity of Supported Metal Catalysts. II. Crystallite Size and CO Chemisorption on Platinum/silica Catalysts. (Reprinted from Journal of Catalysis, Vol. 7 No. 4, April 1967.). by : T. A. Dorling
Download or read book The Structure and Activity of Supported Metal Catalysts. II. Crystallite Size and CO Chemisorption on Platinum/silica Catalysts. (Reprinted from Journal of Catalysis, Vol. 7 No. 4, April 1967.). written by T. A. Dorling and published by . This book was released on 1967 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Structure and Activity of Supported Metal Catalysts by :
Download or read book The Structure and Activity of Supported Metal Catalysts written by and published by . This book was released on 1967 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supported Metals in Catalysis by : James Arthur Anderson
Download or read book Supported Metals in Catalysis written by James Arthur Anderson and published by World Scientific. This book was released on 2012 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from experts in supported metal catalysis from both the industry and academia, this book presents the latest developments in characterization and application of supported metals in heterogeneous catalysis. In addition to thorough and updated coverage of the traditional aspects of heterogeneous catalysis such as preparation, characterization and use in well-established technologies such as vehicle emission control, the book also includes emerging areas where supported metal catalysis will make significant contributions to future developments, such as fuel cells and fine chemicals synthesis. The second edition of Supported Metals in Catalysis comes complete with new and updated chapters containing important summaries of research in a rapidly evolving field. Very few other books deal with this highly pertinent subject matter and, as such, it is a must-have for anyone working in the field of heterogeneous catalysis.
Book Synopsis The Structure and Activity of Supported Metal Catalysts. Lecture Given at Royal Institute of Chemistry Symposium, "Catalysis - Theory and Practice", London, April 1967 by : Ronald Laidlaw Moss
Download or read book The Structure and Activity of Supported Metal Catalysts. Lecture Given at Royal Institute of Chemistry Symposium, "Catalysis - Theory and Practice", London, April 1967 written by Ronald Laidlaw Moss and published by . This book was released on 1967 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Structure and Activity of Supported Metal Catalysts. I. Crystallite Size and Specific Activity for Benzene Hydrogenation of Platinum/silica Catalysts. (Reprinted from Journal of Catalysts, Vol. 5, No. 1, February 1966.). by : T. A. Dorling
Download or read book The Structure and Activity of Supported Metal Catalysts. I. Crystallite Size and Specific Activity for Benzene Hydrogenation of Platinum/silica Catalysts. (Reprinted from Journal of Catalysts, Vol. 5, No. 1, February 1966.). written by T. A. Dorling and published by . This book was released on 1966 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supported Metal Single Atom Catalysis by : Philippe Serp
Download or read book Supported Metal Single Atom Catalysis written by Philippe Serp and published by John Wiley & Sons. This book was released on 2022-02-09 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt: b”Supported Metal Single Atom CatalysisCovers all key aspects of supported metal single atom catalysts, an invaluable resource for academic researchers and industry professionals alike Single atom catalysis is one of the most innovative and dynamic research areas in catalysis science. Supported metal catalysts are used extensively across the chemical industry, ranging from fine and bulk chemical production to petrochemicals. Single atom catalysts (SACs) combine the advantages of both homogeneous and heterogeneous catalysts such as catalyst stability, activity, and high dispersion of the active phase. Supported Metal Single Atom Catalysis provides an authoritative and up-to-date overview of the emerging field, covering the synthesis, preparation, characterization, modeling, and applications of SACs. This comprehensive volume introduces the basic principles of single atom catalysis, describes metal oxide and carbon support materials for SAC preparation, presents characterization techniques and theoretical calculations, and discusses SACs in areas including selective hydrogenation, oxidation reactions, activation of small molecules, C-C bond formation, and biomedical applications. Highlights the activity, selectivity, and stability advantages of supported metal SACs compared to other heterogeneous catalysts Covers applications of SACs in thermal catalysis, electrocatalysis, and photocatalysis Includes chapters on single atom alloys and supported double and triple metal atom catalysts Discusses the prospects, challenges, and potential industrial applications of SACs Supported Metal Single Atom Catalysis is an indispensable reference for all those working in the fields of catalysis, solid-state chemistry, materials science, and spectroscopy, including catalytic chemists, organic chemists, electrochemists, theoretical chemists, and industrial chemists.
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.
Book Synopsis Supported Metal Complexes by : F.R. Hartley
Download or read book Supported Metal Complexes written by F.R. Hartley and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now IS years since the first patents in polymer supported metal complex catalysts were taken out. In the early days ion-exchange resins were used to support ionic metal complexes. Soon covalent links were developed, and after an initially slow start there was a period of explosive growth in the mid to late 1970s during which virtually every homogeneous metal complex catalyst ever reported was also studied bound to a support. Both polymers and inorganic oxides were studied as supports, although the great preponderance of workers studied polymeric supports, and of these polystyrene was by far the commonest used. This period served to show that by very careful design polymer-supported metal complex catalysts could have specific advantages over homogeneous metal complex catalysts. However the subject was a complicated one. Merely immobilising a successful metal complex catalyst to a functionalised support rarely yielded other than an inferior version of the catalyst. Amongst the many discouraging results of the 1970s, there were more than enough results that were sufficiently encouraging to demonstrate that, by careful design, supported metal complex catalysts could be prepared in which both the metal complex and the support combined together to produce an active catalyst which, due to the combination of support and complex, had advantages of activity, selectivity and specificity not found in homogeneous catalysts. Thus a new generation of catalysts was being developed.
Book Synopsis Structure-activity Relationships in Ceria Supported Metal Catalysts for Low-temperature CO Oxidation by : René Patrik Kopelent
Download or read book Structure-activity Relationships in Ceria Supported Metal Catalysts for Low-temperature CO Oxidation written by René Patrik Kopelent and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tailored Metal Catalysts by : Y. Iwasawa
Download or read book Tailored Metal Catalysts written by Y. Iwasawa and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strong Metal-support Interactions by : R. T. K. Baker
Download or read book Strong Metal-support Interactions written by R. T. K. Baker and published by . This book was released on 1986 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-situ Environmental TEM Studies for Developing Structure-activity Relationship in Supported Metal Catalyst by : Santhosh Chenna
Download or read book In-situ Environmental TEM Studies for Developing Structure-activity Relationship in Supported Metal Catalyst written by Santhosh Chenna and published by . This book was released on 2011 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-situ environmental transmission electron microscopy (ETEM) is a powerful tool for following the evolution of supported metal nanoparticles under different reacting gas conditions at elevated temperatures. The ability to observe the events in real time under reacting gas conditions can provide significant information on the fundamental processes taking place in catalytic materials, from which the performance of the catalyst can be understood. The first part of this dissertation presents the application of in-situ ETEM studies in developing structure-activity relationship in supported metal nanoparticles. In-situ ETEM studies on nanostructures in parallel with ex-situ reactor studies of conversions and selectivities were performed for partial oxidation of methane (POM) to syngas (CO+H2) on Ni/SiO2, Ru/SiO2 and NiRu/SiO2 catalysts. During POM, the gas composition varies along the catalyst bed with increasing temperature. It is important to consider these variations in gas composition in order to design experiments for in-situ ETEM. In-situ ETEM experiments were performed under three different reacting gas conditions. First in the presence of H2, this represents the state of the fresh catalyst for the catalytic reaction. Later in the presence of CH4 and O2 in 2:1 ratio, this is the composition of the reacting gases for the POM reaction and this composition acts as an oxidizing environment. Finally in the presence of CH4, this is the reducing gas. Oxidation and reduction behavior of Ni, Ru and NiRu nanoparticles were followed in an in-situ ETEM under reacting gas conditions and the observations were correlated with the performance of the catalyst for POM. The later part of the dissertation presents a technique for determining the gas compositional analysis inside the in-situ ETEM using electron energy-loss spectroscopy. Techniques were developed to identify the gas composition using both inner-shell and low-loss spectroscopy of EELS. Using EELS, an "operando TEM" technique was successfully developed for detecting the gas phase catalysis inside the ETEM. Overall this research demonstrates the importance of in-situ ETEM studies in understanding the structure-activity relationship in supported-metal catalysts for heterogeneous catalysis application.
Book Synopsis A spectroscopic characterization of the structure of supported metal catalysts by : Johannus Hubertus Anna Martens
Download or read book A spectroscopic characterization of the structure of supported metal catalysts written by Johannus Hubertus Anna Martens and published by . This book was released on 1988 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of the Structure, Bonding, Uniformity, and Catalytic Properties of Supported Molecular Iridium Catalysts by : Adam Scott Hoffman
Download or read book Characterization of the Structure, Bonding, Uniformity, and Catalytic Properties of Supported Molecular Iridium Catalysts written by Adam Scott Hoffman and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Supported metal catalysts are widely applied in technology, and a class of such catalysts, supported single-site metal catalysts, is drawing increasing attention because of prospects for increased application and the opportunities for fundamental understanding afforded by such catalysts made to have nearly uniform structures. Elucidation of structure-catalytic activity relationships of supported metals is complicated by the heterogeneity of the metal bonding sites on almost all support surfaces, especially those that are amorphous or incorporate multiple phases. The research summarized in this dissertation was carried out with the goal of fundamental understanding of the structures, reactivities, and catalytic properties of supported single-site catalysts with relatively well-defined structures. The catalyst samples consisted of Ir(C2H4) 2 or Ir(CO)2 supported on MgO or HY zeolite. The catalysts were synthesized by chemisorbing Ir(C2H4)2(acac) or Ir(CO)2(acac) (acac is acetylacetonate) on the above-mentioned supports that had been treated at elevated temperatures to remove water, or, in the case of MgO, to generate unique surface sites for bonding of the metal. The samples were characterized by infrared spectroscopy, X-ray absorption spectroscopy (including X-ray absorption near edge structure and extended X-ray absorption fine structure (EXAFS) analysis), scanning transmission electron microscopy, X-ray diffraction, N2 adsorption, and thermogravimetric analysis. The samples were tested as catalysts for the ethylene hydrogenation reaction. The research yielded four main results. First, a spectroscopic cell was developed for characterization of supported ultra-low loading metal catalyst, second, infrared spectroscopy characterizing metal carbonyls elucidated the uniformity of the metal-support interaction, third, high-energy-resolution X-ray absorption spectroscopy was used to identify ligands not detectable with infrared, and finally a limiting case of the metal-support interaction is identified and characterized. A specific goal was to generate unique surface sites on MgO as a support for samples with iridium loadings as low as 0.01 wt%, to determine sites for preferential bonding of iridium to the support. For characterization of samples with low iridium loadings using X-ray absorption spectroscopy, a novel experimental X-ray absorption spectroscopy cell was designed and fabricated; it allows for investigation of samples in transmission or fluorescence detection modes at temperatures up to 300°C under flow or vacuum conditions. Infrared characterization of the [nu][subscript CO] bands of supported Ir(CO)2 showed that narrower full bands corresponded to higher degrees of uniformity of the supported metal species, with the most uniform being those on zeolites, as a consequence of high degree of crystallinity and uniformity of bonding sites. The results also include new synthesis techniques, such as those involving low synthesis temperatures, high Si:Al ration in the zeolites, and high degrees of support crystallinity resulting from treatments that lead to high degrees of bonding site uniformity. High-energy-resolution fluorescence detection X-ray absorption spectroscopy was used to detect the dynamic exchange of C2H4 and CO ligands on the single-site Ir under conditions for which the sensitivity of conventional infrared spectroscopy was insufficient. The improved resolution in the XANES region also identified specific, assignable, features to C2H4 and CO ligands making it a valuable technique for catalyst characterization. EXAFS analysis of samples consisting of Ir(C2H4)2 supported on MgO demonstrated a change in coordination with decreasing loading and a limiting case of tripodal iridium on the MgO surface. The tripodal species have low initial activity for ethylene hydrogenation relative to the corresponding bipodal species, but they are characterized by greater thermal stability and can be used stably as catalysts at temperatures as high as at least to 300°C in reductive atmospheres. The results show that various surface sites can be involved in the bonding metals to MgO and that these sites exhibit distinct properties.
Book Synopsis Catalysis by Precious Metals, Past and Future by : Marcela Martinez Tejada
Download or read book Catalysis by Precious Metals, Past and Future written by Marcela Martinez Tejada and published by MDPI. This book was released on 2020-04-15 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future of the precious metals is shiny and resistant. Although expensive and potentially replaceable by transition metal catalysts, precious metal implementation in research and industry shows potential. These metals catalyze oxidation and hydrogenation due to their dissociative behavior toward hydrogen and oxygen, dehydrogenation, isomerization, and aromatization, etc. The precious metal catalysts, especially platinum-based catalysts, are involved in a variety of industrial processes. Examples include Pt–Rh gauze for nitric acid production, the Pt/Al2O3 catalyst for cyclohexane and propylene production, and Pd/Al2O3 catalysts for petrochemical hydropurification reactions, etc. A quick search of the number of published articles in the last five years containing a combination of corresponding “metals” (Pt, Pd, Ru, Rh and Au) and “catalysts” as keywords indicates the importance of the Pt catalysts, but also the continuous increase in the contribution of Pd and Au. This Special Issue reveals the importance of precious metals in catalysis and focuses on mono- and bi-metallic formulations of any supported precious metals and their promotional catalytic effect of other transition metals. The application of precious metals in diverse reactions, either homogeneous or heterogeneous, and studies of the preparation, characterization, and applications of the supported precious metal catalysts, are presented.
Book Synopsis Atomically-Precise Methods for Synthesis of Solid Catalysts by : Sophie Hermans
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.
Book Synopsis A Study of the structure and the activity of mixed metal catalysts by : John Herpick Long
Download or read book A Study of the structure and the activity of mixed metal catalysts written by John Herpick Long and published by . This book was released on 1934 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
