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A Study On The Effects Of Additives On Selective Hydrogenation Of Trace Acetylene Over Palladium Catalysts
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Book Synopsis A Study on the Effects of Additives on Selective Hydrogenation of Trace Acetylene Over Palladium Catalysts by : Yeung Ho Park
Download or read book A Study on the Effects of Additives on Selective Hydrogenation of Trace Acetylene Over Palladium Catalysts written by Yeung Ho Park and published by . This book was released on 1991 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Hydrogenation of Trace Acetylene in Ethylene Over Pd-Cu Alumina Catalysts by : Vinayan Nair
Download or read book Selective Hydrogenation of Trace Acetylene in Ethylene Over Pd-Cu Alumina Catalysts written by Vinayan Nair and published by . This book was released on 1983 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Hydrogenation of Acetylene Over Pd, Au, and PdAu Supported Nanoparticles by : Michael Walker
Download or read book Selective Hydrogenation of Acetylene Over Pd, Au, and PdAu Supported Nanoparticles written by Michael Walker and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The removal of trace amounts of acetylene in ethylene streams is a high-volume industrial process that must possess high selectivity of alkyne hydrogenation over hydrogenation of alkenes. Current technology uses metallic nanoparticles, typically palladium or platinum, for acetylene removal. However, problems arise due to the deactivation of the catalysts at high temperatures as well as low selectivities at high conversions. Pore expanded MCM-41 is synthesized via a two-step strategy in which MCM-41 was prepared via cetyltrimethylammonium bromide (CTMABr) followed by the hydrothermal treatment with N,N-dimethyldecylamine (DMDA). This material was washed with ethanol to remove DMDA, or calcined to remove both surfactants. PE-MCM-41 based materials were impregnated with palladium, gold, and palladium-gold nanoparticles. The removal of DMDA had an effect on both the conversion and selectivity, in which they were found to drop significantly. However, by using the bimetallic PdAu catalysts, higher selectivity could be achieved due to increased electron density.
Book Synopsis Selective Hydrogenation of Acetylene Over Modified Palladium Catalysts by : Arash Mirjalili
Download or read book Selective Hydrogenation of Acetylene Over Modified Palladium Catalysts written by Arash Mirjalili and published by . This book was released on 2016 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Hydrogenation of Acetylene in the Presence of Ethylene Over Supported Pd and Pd-Mg Catalysts by : Ying Ji
Download or read book Selective Hydrogenation of Acetylene in the Presence of Ethylene Over Supported Pd and Pd-Mg Catalysts written by Ying Ji and published by . This book was released on 2009 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Alumina Grinding on the Properties of Alumina Supported Palladium Catalysts in Selective Hydrogenation of Acetylene by :
Download or read book Effect of Alumina Grinding on the Properties of Alumina Supported Palladium Catalysts in Selective Hydrogenation of Acetylene written by and published by . This book was released on 2008 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the effects of alumina grinding and mixed oxides (ZnO-Al2O3 and NiO-Al2O3) grinding with various Zn/Al and Ni/Al molar ratios (0.1 and 0.5) prepared by an attrition ball mill on catalytic performance of alumina supported Pd catalysts for selective hydrogenation of acetylene were investigated. It was found that catalytic performances of the Pd catalyst supported on Al2O3 milled for 12 h were superior compared to those of Pd-supported on the unmilled Al2O3. However, all the catalysts prepared from milled mixed oxides presented lower acetylene conversion and ethylene selectivity than that of the catalyst prepared from alumina milled for 12 h. From X-ray diffraction, it was suggested that varying milling time directly affected the crystallite size, surface area and acidity of alumina supports. As revealed by CO chemisorption, milling of Al2O3 supports could increase metal active sites of Pd/Al2O3 catalysts without change in the interaction between Pd and the alumina support so that the catalysts exhibited higher acetylene activity and ethylene selectivity. Moreover, increasing of acidity affected coke formation on the catalysts.
Book Synopsis Selective Hydrogenation of Acetylene Over Palladium on Ionic Liquid Loaded Silica Support by : Ting Zhou
Download or read book Selective Hydrogenation of Acetylene Over Palladium on Ionic Liquid Loaded Silica Support written by Ting Zhou and published by . This book was released on 2012 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Additives on the Reactivity of Palladium Surfaces for the Chemisorption and Hydrogenation of Carbon Monoxide by :
Download or read book The Effect of Additives on the Reactivity of Palladium Surfaces for the Chemisorption and Hydrogenation of Carbon Monoxide written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research studied the role of surface additives on the catalytic activity and chemisorptive properties of Pd single crystals and foils. Effects of Na, K, Si, P, S, and Cl on the bonding of CO and H and on the cyclotrimerization of acetylene on the (111), (100) and (110) faces of Pd were investigated in addition to role of TiO2 and SiO2 overlayers deposited on Pd foils in the CO hydrogenation reaction. On Pd, only in the presence of oxide overlayers, are methane or methanol formed from CO and H2. The maximum rate of methane formation is attained on Pd foil where 30% of the surface is covered with titania. Methanol formation can be achieved only if the TiO(subscript x)/Pd surface is pretreated in 50 psi of oxygen at 550°C prior to the reaction. The additives (Na, K, Si, P, S, Cl) affect the bonding of CO and hydrogen and the cyclotrimerization of acetylene to benzene by structural and electronic interactions. In general, the electron donating additives increase the desorption temperature of CO and increase the rate of acetylene cyclotrimerization and the electron withdrawing additives decrease the desorption temperature of CO and decrease the rate of benzene formation from acetylene.
Book Synopsis The Selective Hydrogenation of Acetylene with Palladium-carbon Nanostructured Catalysts by : Willem Gabriël Augustyn
Download or read book The Selective Hydrogenation of Acetylene with Palladium-carbon Nanostructured Catalysts written by Willem Gabriël Augustyn and published by . This book was released on 2007 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this study is to synthesize and characterize nanostructured single-walled carbon nanotube supported catalysts with tailored characteristics and to apply these catalysts to the selective hydrogenation of acetylene under various experimental conditions.
Book Synopsis Selective Hydrogenation of Acetylene on Palladium Catalysts Supported on Solvothermal-derived Titanium Dioxide by :
Download or read book Selective Hydrogenation of Acetylene on Palladium Catalysts Supported on Solvothermal-derived Titanium Dioxide written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Ceria Supported Palladium Catalysts for Selective Hydrogenation of Acetylene in Ethylene by : Junyi He
Download or read book Investigation of Ceria Supported Palladium Catalysts for Selective Hydrogenation of Acetylene in Ethylene written by Junyi He and published by . This book was released on 2017 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1991 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Additives on the Reactivity of Palladium Surfaces for the Chemisorption and Hydrogenation of Carbon Monoxide by : Thomas George Rucker
Download or read book The Effect of Additives on the Reactivity of Palladium Surfaces for the Chemisorption and Hydrogenation of Carbon Monoxide written by Thomas George Rucker and published by . This book was released on 1987 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Selective Hydrogenation of Acetylene Over Pd and Pd-Cu on Alumina Catalysts by : Stephen Claude LeViness
Download or read book The Selective Hydrogenation of Acetylene Over Pd and Pd-Cu on Alumina Catalysts written by Stephen Claude LeViness and published by . This book was released on 1984 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalyst Deactivation in the Selective Hydrogenation of Acetylene Over Supported Pd Catalyst by : Walter Plante
Download or read book Catalyst Deactivation in the Selective Hydrogenation of Acetylene Over Supported Pd Catalyst written by Walter Plante and published by . This book was released on 1987 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal-Support and Metal-Additive Effects in Catalysis by : B. Imelik
Download or read book Metal-Support and Metal-Additive Effects in Catalysis written by B. Imelik and published by Elsevier. This book was released on 2000-04-01 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Support and Metal-Additive Effects in Catalysis, Volume 11, documents the proceedings of an international symposium organized by the Institut de Recherches sur la Catalyse - CNRS – Villeurbanne and sponsored by the Centre National de la Recherche Scientifique, Ecully (Lyon), September 14-16, 1982. This volume contains 40 manuscripts that cover a wide range of topics. Among these are studies of metal-support interactions involving Pt/Al2O3, Pt/TiO2,Fe/TiO2, Pt/MgO, Rh /Al2O3, and Pt/CeO2 catalysts. There are also separate chapters dealing with ethane, n-butane, and cyclohexane hydrogenolysis; skeletal isomerization of methylpentanes; the catalytic activity and selectivity of noble metals; CO hydrogenation over supported on SiO2, Al2O3, Ti O2,and Zr O2 nickel catalysts; and the role of promoters in Pd catalysts for methanol synthesis. Subsequent chapters cover the poisoning of platinum and nickel by sulfur; C6H6 and CO chemisorption on Pt78Ni22 (111) single crystal alloy; the surface composition of industrial ammonia synthesis catalysts; and the role of alkalis and electronegative promoters on Fe and Ni catalysts.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
