Download or read book Kinetic Study of Hydrogenation of Carbon Monoxide on Ruthenium Catalyst written by Amthalal Manordas Patel and published by . This book was released on 1970 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Kinetic Study on the Adsorption and Reaction of Hydrogen Over Silica supported Ruthenium and Silver ruthenium Catalysts During the Hydrogenation of Carbon Monoxide written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the catalytic hydrogenation of carbon monoxide has been a subject of considerable investigation for many years, its increasing economical attractiveness as an industrial source of hydrocarbons has recently led to a search for more active and selective catalysts. A fundamental problem in the development of such catalysts is an incomplete knowledge of the operative surface processes, due in large part to the inability to accurately measure surface concentrations of reactant species during reaction. Specifically, the concentration of surface hydrogen proves difficult to estimate using normally revealing techniques such as transient isotopic exchange due to kinetic isotope effects. Knowledge of such concentrations is essential to the determination of the mechanisms of adsorption and reaction, since many kinetic parameters are concentration dependent. It is the aim of this research to investigate the mechanism and kinetics of the adsorption and reaction of hydrogen on silica-supported ruthenium and silver-ruthenium catalysts during the hydrogenation of carbon monoxide. By preadsorbing carbon monoxide onto the surface of ruthenium and silver-ruthenium catalysts, the kinetics of hydrogen adsorption and reaction can be monitored upon exposure of this surface to ambient hydrogen gas. This is accomplished by conducting identical experiments on two separate systems. First, the formation of methane is monitored using mass spectroscopy, and specific reaction rates and apparent activation energies are measured. Next, in situ[sup 1]H-NMR is used to monitor the amount of hydrogen present on the catalyst surface during adsorption and reaction. The results for these two sets of experiments are then combined to show a correlation between the rate of reaction and the surface hydrogen concentration. Finally, transition state theory is applied to this system and is used to explain the observed change in the apparent activation energy. The structure sensitivity of hydrogen adsorption on ruthenium is then elucidated by comparison of these results with differential heats of hydrogen adsorption data for the two systems.
Download or read book A Kinetic Study on the Adsorption and Reaction of Hydrogen Over Silica supported Ruthenium and Silver ruthenium Catalysts During the Hydrogenation of Carbon Monoxide written by David Paul VanderWiel and published by . This book was released on 1998 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The apparent activation energy for methanation decreased from about 23 kcal/mol for Ru/SiO2 to about 18 kcal/mol for the Ag-Ru/SiO2 series. These results show good correlation with previous hydrogen microcalorimetry measurements on the same catalysts by our group. The mechanism of the synergistic effect of Ag on Ru is presented in terms of "portal site mediated adsorption", whereby hydrogen is supplied to the catalyst surface by rapid dissociative adsorption occurring at low coordination sites which are preferentially blocked by Ag in bimetallic systems.
Download or read book The Chemistry of the Catalyzed Hydrogenation of Carbon Monoxide written by G. Henrici-Olive and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the oil embargo, in the winter 1973174, parts of Western Europe present ed an almost war-like aspect on Saturdays and Sundays: no traffic on the high ways, no crowds at ski resorts and other weekend entertainment places, no gaso line at the pumps. Living and teaching then in that part of the world, and discussing the situa tion with our students, we came to the conclusion that it would be timely to col lect the fine chemistry already known at the time in the field of conversion of coal to gasoline and other chemicals, and by this way help to draw the attention to this important alternative to crude oil. The idea of this book was born. The energy shock of the early seventies has been healthy and of great conse quences in chemistry. Large amounts of research money have been put to work since, and our knowledge of the possibilities and limitations of coal-based chemistry has increased enormously. During several years it appeared inap propriate to write a monograph about a topic which was in the midst of such an impetuous development. Nevertheless, we collected, and critically selected, the upcoming work as it appeared in the literature, and also tried to provide some modest input ourselves. Now, ten years later, the situation seems to be settled to a certain degree.
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.
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:
Download or read book The Reaction of Carbon Dioxide and Hydrogen written by Prakash Paragji Naik and published by . This book was released on 1968 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Kinetics of the Methanation of Carbon Monoxide Over Nickel Catalysts written by Robert William Fontaine and published by . This book was released on 1973 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Kinetic Study of the Reactions and Interactions of Carbon Monoxide Oxygen and Hydrogen Over a Platinum alumina Catalyst written by Thomas Charles Fitzgerald and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oxygenates by Homologation or CO Hydrogenation with Metal Complexes written by A. Braca and published by Springer Science & Business Media. This book was released on 1993-12-31 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Born and initially developed in various industrial laboratories, mainly in U.S.A. and Gennany, homogeneous phase catalytic carbon monoxide hydrogenation and alcohols and their derivatives carbonylation and homologation, have generally been considered and reviewed separately in the course of their 40 years history without concern for common aspects in the chemical transfonnations and in catalysis. Thanks to researchers of Japanese companies participating in the National C 1 Chemistry Project (1980-1987) the scientific and technical approaches in this field have been unified and applied in parallel, in the light of some common aspects of the chemical reactions and mechanisms. Now, at a moment when research seems becahned, a general presentation and discussion of the most recent topics might be an useful basis for further development of this chemistry. To delimit and simplify the discussion of the chemical aspects and the nature of the catalysts involved, the present review is limited to reactions employing homogeneous metal complexes for the direct conversion of syngas to oxygenates and to the hydrocarbonylation of these last to homologous derivatives. Since the previous practically contemporary reviews by Dombek [in Adv. Organomet. Chern. (1983)] on CO hydrogenation and by the present authors [in Asp.Homog.Catal.(Reidel Pu.l984)] on alcohol homologation fully cover the literature up to 1982, here we mainly refer to work done after 1982, and consider the cited reviews as covering the historical development of research in the 1940- 1980 period.
Download or read book Catalytic Activation of Carbon Monoxide written by Peter C. Ford and published by . This book was released on 1981 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetics of Hydrogenation of Carbon Dioxide on Ruthenium Catalyst written by Pan Lim Moy and published by . This book was released on 1971 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Higher alcohol Synthesis from Carbon Monoxide and Hydrogen written by Anil Kumar Gunturu and published by . This book was released on 1997 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetics of the Catalyzed Oxidation of Hydrogen Carbon Monoxide and Methane by Oxygen in a Flowing Stream of Helium written by C. D. Scott and published by . This book was released on 1961 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THE KINETICS AND MECHANISM OF CARBON MONOXIDE HYDROGENATION OVER ALUMINA SUPPORTED RUTHENIUM written by and published by . This book was released on 1980 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Transient Kinetic and Infrared Study of Carbon Monoxide Hydrogenation on Supported Platinum Catalysts written by Thomas K. Leong and published by . This book was released on 1986 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Monoxide Hydrogenation Using Ruthenium Catalysts written by Jan Hendrik Blank and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
