The effect of silica support texture and anion of impregnating solution on Ru dispersion and on RuCu interaction

Three sets of Ru and Ru-Cu catalysts were prepared by different methods and were placed on different types of silica supports which have been used by various groups of experimentalists. The initial reduction temperature (773 and 723/sup 0/K) and the volume of solution/g of support were judged not to...

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Veröffentlicht in:	J. Catal.; (United States) 1983-01, Vol.84 (2), p.477-479
Hauptverfasser:	Haller, Gary L., Resasco, Daniel E., Wang, Jialiang
Format:	Artikel
Sprache:	eng
Schlagworte:	090110 - Hydrocarbon Fuels- Properties- (1979-1989) 10 SYNTHETIC FUELS 360102 - Metals & Alloys- Structure & Phase Studies 360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies 400201 - Chemical & Physicochemical Properties ALKANES ALLOYS ANIONS Catalysis CATALYSTS Catalysts: preparations and properties Catalytic reactions CHALCOGENIDES CHARGED PARTICLES CHEMICAL PREPARATION CHEMICAL REACTIONS CHEMISORPTION Chemistry CHLORIDES CHLORINE COMPOUNDS COMPARATIVE EVALUATIONS COPPER COPPER COMPOUNDS COPPER NITRATES ELEMENTS ETHANE Exact sciences and technology General and physical chemistry General. Nomenclature, chemical documentation, computer chemistry HALIDES HALOGEN COMPOUNDS HYDROCARBONS HYDROGEN HYDROGENATION IMPREGNATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ION EXCHANGE IONS MATERIALS SCIENCE METALS MINERALS MOLECULAR STRUCTURE MOLECULAR WEIGHT NITRATES NITROGEN COMPOUNDS NONMETALS ORGANIC COMPOUNDS OXIDE MINERALS OXIDES OXYGEN COMPOUNDS PLATINUM METAL ALLOYS PLATINUM METALS REFRACTORY METAL COMPOUNDS RUTHENIUM RUTHENIUM ALLOYS RUTHENIUM CHLORIDES RUTHENIUM COMPOUNDS RUTHENIUM NITRATES SEPARATION PROCESSES SILICA SILICON COMPOUNDS SILICON OXIDES SORPTION SORPTIVE PROPERTIES SURFACE PROPERTIES SYNTHESIS Theory of reactions, general kinetics Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry TRANSITION ELEMENT COMPOUNDS TRANSITION ELEMENTS
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Beschreibung
Zusammenfassung:	Three sets of Ru and Ru-Cu catalysts were prepared by different methods and were placed on different types of silica supports which have been used by various groups of experimentalists. The initial reduction temperature (773 and 723/sup 0/K) and the volume of solution/g of support were judged not to be critical preparation variables in this study - the ethane hydrogenation activity. Little evidence exists for Ru-Cu interaction in the H/sub 2/ chemisorption. The anions of the impregnating solution and the texture do not directly affect Cu-Ru interactions, but may do so indirectly by their effect on the dispersion of Ru. Apparently nitrate complexes of Ru undergo stronger ion exchange on silica than do chloride containing complexes. The resulting better dispersion of Ru with its accompanying segregation decreases the likelihood of Ru-Cu interaction. This interpretation is undergoing further study. 2 figures, 1 table.
ISSN:	0021-9517 1090-2694
DOI:	10.1016/0021-9517(83)90018-0