Download or read book Isotopic Tracing Studies and Microkinetic Analysis of Ethylene Hydrogenation Over Platinum Catalysts written by Scott A. Goddard and published by . This book was released on 1991 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Microcatalytic Study of Ethylene Hydrogenation Over Platinum and Alumina supported Platinum Catalysts written by Nancy Belle Lowery and published by . This book was released on 1970 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparative Study of the Kinetics of the Ethylene Hydrogenation Reaction Over Platinum and Alumina supported Platinum Catalysts written by Hollis Michael Whitehead and published by . This book was released on 1966 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Isotopic Modeling of Ethylene Hydrogenation and Hydroformylation Over Metal Catalysts written by Mark A. Brundage and published by . This book was released on 1997 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1991 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogenation of Ethylene Over Platinum Platinum tantalum and Platinum aluminum Alloy Catalysts written by Chi-Hwa Tsang and published by . This book was released on 1983 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Isotopic Tracer Studies of Fischer Tropsch Synthesis Over Ru TiO sub 2 Catalysts written by and published by . This book was released on 1992 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fischer-Tropsch synthesis is a process in which CO and H2 react to give predominantly liquid hydrocarbons. The reaction can be considered a special type of polymerization in which the monomer is produced in situ, and chain growth occurs by a sequence of independently repeated additions of the monomer to the growing chain. A investigation has been conducted to study the CO hydrogenation reaction in order to better understand catalyst deactivation and the elementary surface processes involved in chain growth. Isotopic tracers are used in conjunction with transient-response techniques in this study of Fischer-Tropsch synthesis over Ru/TiO2 catalysts. Experiments are conducted at a total pressure of 1 atmosphere, reaction temperatures of 453--498 K and D2/CO (or H2/CO) ratios of 2--5. Synthesis products are analyzed by gas chromatography or isotope-ratio gas chromatography-mass spectrometry. Rate constants for chain initiation, propagation and termination are evaluated under steady-state reaction conditions by using transients in isotopic composition. The activation energy for chain termination is much higher than that for propagation, accounting for the observed decrease in the chain growth parameter are also estimated. Coverages by reaction intermediates are also estimated. When small amounts of 12C-labelled ethylene are added to 13CO/H2 synthesis gas, ethylene acts as the sole chain initiator. Ethylene-derived carbon also accounts for 45% of the C1 monomer pool. 102 refs., 29 figs., 11 tabs.

Download or read book Isotopic Tracing NMR and FTIR Studies of Carbon and Hydrogen Containing Adspecies on Group VIII Metals During CO Hydrogenation written by Philip Winslow and published by . This book was released on 1984 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applications of Microkinetic Analysis written by James Edward Rekoske and published by . This book was released on 1991 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transient and Isotopic Tracing Kinetic Study on Supported Rhodium Catalysts in the CO Hydrogenation Reaction written by Angelos Michael Efstathiou and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 14C Radiotracer Studies of the Hydrogenation Reactions Over Supported Platinum Catalysts written by Ezziddin Ahmed Arafa and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Isotopic Tracer Studies of Fischer Tropsch Synthesis Over Ru written by and published by . This book was released on 1992 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fischer-Tropsch synthesis is a process in which CO and H2 react to give predominantly liquid hydrocarbons. The reaction can be considered a special type of polymerization in which the monomer is produced in situ, and chain growth occurs by a sequence of independently repeated additions of the monomer to the growing chain. A investigation has been conducted to study the CO hydrogenation reaction in order to better understand catalyst deactivation and the elementary surface processes involved in chain growth. Isotopic tracers are used in conjunction with transient-response techniques in this study of Fischer-Tropsch synthesis over Ru/TiO2 catalysts. Experiments are conducted at a total pressure of 1 atmosphere, reaction temperatures of 453--498 K and D2/CO (or H2/CO) ratios of 2--5. Synthesis products are analyzed by gas chromatography or isotope-ratio gas chromatography-mass spectrometry. Rate constants for chain initiation, propagation and termination are evaluated under steady-state reaction conditions by using transients in isotopic composition. The activation energy for chain termination is much higher than that for propagation, accounting for the observed decrease in the chain growth parameter are also estimated. Coverages by reaction intermediates are also estimated. When small amounts of 12C-labelled ethylene are added to 13CO/H2 synthesis gas, ethylene acts as the sole chain initiator. Ethylene-derived carbon also accounts for 45% of the C1 monomer pool. 102 refs., 29 figs., 11 tabs.

Download or read book Ethylene Hydrogenation Over a Copper Magnesia Catalyst written by Om Prakash Bhalotia and published by . This book was released on 1964 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flow reactor Kinetics of Ethylene Hydrogenation Over Metal Oxide Catalysts written by Roland Ru-kwei Kyi and published by . This book was released on 1966 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms of Platinum Group Metal Catalysis Investigated by Experimental and Theoretical Methods written by Marco Zimmer-De Iuliis and published by . This book was released on 2009 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of kinetic isotope determination and computational studies on Noyori-type catalytic systems for the hydrogenation of ketones are presented. The catalysts examined include RuH2(NHCMe2 CMe2NH2)(R-binap) and RuH(NHCMe 2CMe2NH2)(PPh3)2. These complexes are active catalysts for ketone hydrogenation in benzene without addition of an external base. The kinetic isotope effect (KIE) for catalysis by RuH2(NHCMe2CMe2NH2)( R-binap) was determined to be 2.0 +/- (0.1). The calculated KIE for the model system RuH(NHCH2CH2NH2)(PH 3)2 was 1.3, which is smaller than the experimentally observed value but does not include tunneling effects.The complex OsH(NHCMe2CMe2NH2)(PPh 3)2 is known to display autocatalytic behaviour when it catalyzes the hydrogenation of acetophenone in benzene. Pseudo first-order reaction conditions are obtained via addition of the product alcohol at the beginning of each kinetic experiment. The KIE determined using various combinations of deuterium-labeled gas, alcohol and ketone was found to be 1.1 +/- (0.2). DFT calculations were used to explore the effect of the alcohol and the KIE. An induction period is observed at the start of the hydrogenation that is attributed to the formation of an alkoxide complex. A novel, diamine-orchestrated hydrogen-bonding network is proposed based on DFT calculations to explain how the alkoxide is converted back to the active catalyst.The tetradentate complexes trans-RuHCl[PPh2(ortho-C6 H4)CH2NHCH2)]2 and RuHCl[PPh 2(ortho-C6H4)CH2NHCMe2)]2 are known to be catalysts for the hydrogenation of acetophenone and benzonitrile in toluene when activated by KOtBu/KH. DFT studies were performed and a mechanism is proposed. The calculated rate limiting step for acetone hydrogenation was found to be heterolytic splitting of dihydrogen, which agrees well with experiment. The novel outer-sphere sequential hydrogenation of a C≡N triple bond and then a C=N double bond is proposed.A mechanism is proposed, which is supported by DFT studies, to explain the selectivity observed in the nucleophilic attack of amines or aziridines on palladium pi-prenyl phosphines complexes. Calculations on based on a palladium complex with two phosphorus donor ligands indicated that the observed selectivity would not be produced. Using two new model intermediates with either THF or aziridine substituted for a phosphine ligand trans to the unhindered side of the prenyl ligand did predict the experimentally observed selectivity.

Download or read book Computational Catalysis written by Aravind Asthagiri and published by Royal Society of Chemistry. This book was released on 2014 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive review of the methods and approaches being adopted to push forward the boundaries of computational catalysis.

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.