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Infra Red Studies Of Carbon Monoxide And Hydrogen Absorbed On Silica Supported Metal Catalysts
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Book Synopsis Infra-red Studies of Carbon Monoxide and Hydrogen Absorbed on Silica Supported Metal Catalysts by : Martin James Heal
Download or read book Infra-red Studies of Carbon Monoxide and Hydrogen Absorbed on Silica Supported Metal Catalysts written by Martin James Heal and published by . This book was released on 1976* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diffuse Reflectance Infrared Spectroscopic Studies of Adsorbed Carbon Monoxide on Supported Rhodium Catalysts by : Kenneth Warren Van Every
Download or read book Diffuse Reflectance Infrared Spectroscopic Studies of Adsorbed Carbon Monoxide on Supported Rhodium Catalysts written by Kenneth Warren Van Every and published by . This book was released on 1987 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reduction of Nitric Oxide by Carbon Monoxide Over a Silica Supported Platinum Catalyst by : D'Arcy Harold Lorimer
Download or read book Reduction of Nitric Oxide by Carbon Monoxide Over a Silica Supported Platinum Catalyst written by D'Arcy Harold Lorimer and published by . This book was released on 1978 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Noble Metal Catalysts in Gas and Liquid Phase for Reactions Involving Carbon Monoxide by : Rong He
Download or read book Studies of Noble Metal Catalysts in Gas and Liquid Phase for Reactions Involving Carbon Monoxide written by Rong He and published by . This book was released on 2004 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reduction of Nitric Oxide by Carbon Monoxide Over a Silica Supported Platinum Catalyst by :
Download or read book Reduction of Nitric Oxide by Carbon Monoxide Over a Silica Supported Platinum Catalyst written by and published by . This book was released on 1978 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reduction of nitric oxide by carbon monoxide over a 4.5 weight precent platinum catalyst supported on silica was studied at 300 C. Reaction rate data was obtained together with in situ infrared spectra of species on the catalyst surface. The kinetics of the system were found to exhibit two distinct trends, depending on the molar ratio of CO/NO in the reactor. For net reducing conditions (CO/NO> 1) the catalyst underwent a transient deactivation, the extent of which was dependent on the specific CO/NO ratio during reaction. Reactivation of the catalyst was obtained with both oxidizing and reducing pretreatments. For molar feed ratios of CO/NO less than one, carbon monoxide conversion was typically 95 to 100%, resulting in strongly oxidizing conditions over the catalyst. Under these conditions no deactivation was apparent. Infrared spectra recorded under reaction conditions revealed intense bands at 2075 and 2300 cm−1, which were identified as carbon monoxide adsorbed on Pt and Si-NCO, respectively. Isocyanate bands formed under reducing conditions were more intense and exhibited greater stability than those formed under oxidizing conditions. A reaction mechanism based on the dissociation of nitric oxide as the rate-limiting step was used to correlate nitric oxide reaction rates and nitrous oxide selectivities observed under reducing conditions. As part of this mechanism it is assumed that nitrous bxide is formed via a Langmuir-Hinshelwood process in which an adsorbed nitrogen atom reacts with an adsorbed nitric oxide molecule. The nitric oxide reaction rate was found to be first order in nitric oxide partial pressure, and inverse second order in carbon monoxide partial pressure. A mechanism is proposed to qualitatively explain the deactivation process observed under reducing conditions. The essential part of this mechanism is the formation of an isocyanate species on the Pt crystallites of the catalyst and the subsequent transient diffusion of these species to the silica support. The deactivation is believed to result from the build-up of NCO on vacant sites necessary for the dissociation of nitric oxide.
Book Synopsis Gravimetric Adsorption Study of Hydrogen and Carbon Monoxide on a Supported Ruthenium Catalyst by : Wayne Allen Bollinger
Download or read book Gravimetric Adsorption Study of Hydrogen and Carbon Monoxide on a Supported Ruthenium Catalyst written by Wayne Allen Bollinger and published by . This book was released on 1976 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Organometallic Chemistry: Molecular Approaches to Surface Catalysis by : Jean-Marie Basset
Download or read book Surface Organometallic Chemistry: Molecular Approaches to Surface Catalysis written by Jean-Marie Basset and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface organometallic chemistry is a new field bringing together researchers from organometallic, inorganic, and surface chemistry and catalysis. Topics ranging from reaction mechanisms to catalyst preparation are considered from a molecular basis, according to which the "active site" on a catalyst surface has a supra-molecular character. This. the first book on the subject, is the outcome of a NATO Workshop held in Le Rouret. France, in May. 1986. It is our hope that the following chapters and the concluding summary of recommendations for research may help to provide a definition of surface organometallic chemistry. Besides catalysis. the central theme of the Workshop, four main topics are considered: 1) Reactions of organometallics with surfaces of metal oxides, metals. and zeolites; 2) Molecular models of surfaces, metal oxides, and metals; 3) Molecular approaches to the mechanisms of surface reactions; 4) Synthesis and modification of zeolites and related microporous solids. Most surface organometallic chemistry has been carried out on amorphous high-surf ace-area metal oxides such as silica. alumina. magnesia, and titania. The first chapter. contributed by KNOZINGER. gives a short summary of the structure and reactivity of metal oxide surfaces. Most of our understanding of these surfaces is based on acid base and redox chemistry; this chemistry has developed from X-ray and spectroscopic data, and much has been inferred from the structures and reactivities of adsorbed organic probe molecules. There are major opportunities for extending this understanding by use of well-defined (single crystal) oxide surfaces and organometallic probe molecules.
Book Synopsis The Chemistry and Biology of Nitroxyl (HNO) by : Fabio Doctorovich
Download or read book The Chemistry and Biology of Nitroxyl (HNO) written by Fabio Doctorovich and published by Elsevier. This book was released on 2016-09-01 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry and Biology of Nitroxyl (HNO) provides first-of-its-kind coverage of the intriguing biologically active molecule called nitroxyl, or azanone per IUPAC nomenclature, which has been traditionally elusive due to its intrinsically high reactivity. This useful resource provides the scientific basis to understand the chemistry, biology, and technical aspects needed to deal with HNO. Building on two decades of nitric oxide and nitroxyl research, the editors and authors have created an indispensable guide for investigators across a wide variety of areas of chemistry (inorganic, organic, organometallic, biochemistry, physical, and analytical); biology (molecular, cellular, physiological, and enzymology); pharmacy; and medicine. This book begins by exploring the unique molecule’s structure and reactivity, including important reactions with small molecules, thiols, porphyrins, and key proteins, before discussing chemical and biological sources of nitroxyl. Advanced chapters discuss methods for both trapping and detecting nitroxyl by spectroscopy, electrochemistry, and fluorescent inorganic cellular probing. Expanding on the compound’s foundational chemistry, this book then explores its molecular physiology to offer insight into its biological implications, pharmacological effects, and practical issues. Presents the first book on HNO (nitroxyl or azanone), an increasingly important molecule in biochemistry and pharmaceutical research Provides a valuable coverage of HNO’s chemical structure and significant reactions, including practical guidance on working with this highly reactive molecule Contains high quality content from recognized experts in both industry and academia
Book Synopsis Plasma Catalysis by : Annemie Bogaerts
Download or read book Plasma Catalysis written by Annemie Bogaerts and published by MDPI. This book was released on 2019-04-02 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO2 conversion into value-added chemicals and fuels, N2 fixation for the synthesis of NH3 or NOx, methane conversion into higher hydrocarbons or oxygenates. It is also widely used for air pollution control (e.g., VOC remediation). Plasma catalysis allows thermodynamically difficult reactions to proceed at ambient pressure and temperature, due to activation of the gas molecules by energetic electrons created in the plasma. However, plasma is very reactive but not selective, and thus a catalyst is needed to improve the selectivity. In spite of the growing interest in plasma catalysis, the underlying mechanisms of the (possible) synergy between plasma and catalyst are not yet fully understood. Indeed, plasma catalysis is quite complicated, as the plasma will affect the catalyst and vice versa. Moreover, due to the reactive plasma environment, the most suitable catalysts will probably be different from thermal catalysts. More research is needed to better understand the plasma–catalyst interactions, in order to further improve the applications.
Book Synopsis Simultaneous Kinetic and Infrared Studies of Carbon Monoxide Oxidation on Supported Platinum Catalyst by : Kwang-Ho Park
Download or read book Simultaneous Kinetic and Infrared Studies of Carbon Monoxide Oxidation on Supported Platinum Catalyst written by Kwang-Ho Park and published by . This book was released on 1987 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Infrared Studies of Carbon Monoxide Adsorbed on Sulfur-poisoned Nickel/alumina and Cobalt/alumina Catalysts by : Sunil Bahl
Download or read book Infrared Studies of Carbon Monoxide Adsorbed on Sulfur-poisoned Nickel/alumina and Cobalt/alumina Catalysts written by Sunil Bahl and published by . This book was released on 1982 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Methods in Catalytic Research by : Robert B. Anderson
Download or read book Experimental Methods in Catalytic Research written by Robert B. Anderson and published by Academic Press. This book was released on 2013-10-22 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preparation and Examination of Practical Catalysts: Volume II deals with preparing and examining practical catalysts and provides useful accounts of methods used in catalytic research by specialists. The text covers topics such as molecular sieve zeolites – the estimation of zeolite purity and zeolite modification, the introduction of catalytically active components, and the methods of preparation and characterization of supported metal catalysts. Also covered are topics such as the use of the electron probe microanalyzer in catalysts, electron microscopy - related instruments, principles in scanning electron microscopy, and the principles and specimen preparation in transmission electron microscopy; Mössbauer spectroscopy, and microbalances in adsorption and catalysts. The book is recommended for chemists who would like to know more about the preparation and usage of catalysts, as well as the studies on the field.
Download or read book Fossil Energy Update written by and published by . This book was released on 1981 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Chemical Society by :
Download or read book Journal of the Chemical Society written by and published by . This book was released on 1989 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Observation of the Kinetically Relevant Site of CO Hydrogenation on Supported Ru Catalyst at 700 K by Time-Resolved FT-IR Spectroscopy by :
Download or read book Direct Observation of the Kinetically Relevant Site of CO Hydrogenation on Supported Ru Catalyst at 700 K by Time-Resolved FT-IR Spectroscopy written by and published by . This book was released on 2008 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-resolved FT-IR spectra of carbon monoxide hydrogenation over alumina-supported ruthenium particles were recorded on themillisecond time scale at 700 K using pulsed release of CO and a continuous flow of H2/N2 (ratio 0.067 or 0.15, 1 atm total pressure). Adsorbed carbon monoxide was detected along with gas phase products methane (3016 and 1306 cm-1), water (1900 +- 1300 cm-1), and carbon dioxide (2348 cm-1). Aside from adsorbed CO, no other surface species were observed. The rate of formation of methane is 2.5 +- 0.4 s-1 and coincides with the rate of carbon dioxide growth (3.4 +- 0.6 s-1), thus indicating that CH4 and CO2 originate from a common intermediate. The broad band of adsorbed carbon monoxide has a maximum at 2010 cm-1 at early times (36 ms) that shifts gradually to 1960 cm-1 over a period of 3 s as a result of the decreasing surface concentration of CO. Kinetic analysis of the adsorbed carbon monoxide reveals that surface sites absorbing at the high frequency end of the infrared band are temporally linked to gas phase product growth. Specifically, a (linear) CO site at 2026 cm-1 decays with a rate constant of 2.9 +- 0.1 s-1, which coincides with the rise constant of CH4. This demonstrates that the linear CO site at 2026 cm-1 is the kinetically most relevant one for the rate-determining CO dissociation step under reaction conditions at 700 K.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Catalysis written by and published by Academic Press. This book was released on 1971-02-27 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Catalysis
