Support effects on metal-metal interaction in RhAu bimetallic catalysts

Chemisorption and catalytic activity measurements show that the degree of metal-metal interaction in supported RhAu catalysts depends on the oxide used as a support (SiO 2 > TiO 2 > Al 2O 3). UV-Vis experiments and pH measurement of the impregnating solutions indicate that the metal precursor...

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Veröffentlicht in:	Journal of catalysis 1988-05, Vol.111 (1), p.41-49
Hauptverfasser:	Nuñez, G.M., Rouco, A.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis Catalysts: preparations and properties Catalytic reactions Chemistry Exact sciences and technology General and physical chemistry General. Nomenclature, chemical documentation, computer chemistry Theory of reactions, general kinetics Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Zusammenfassung:	Chemisorption and catalytic activity measurements show that the degree of metal-metal interaction in supported RhAu catalysts depends on the oxide used as a support (SiO 2 > TiO 2 > Al 2O 3). UV-Vis experiments and pH measurement of the impregnating solutions indicate that the metal precursors do not interact in solution. TPR studies demonstrate that different metal precursorsupport affinities determine the degree of RhAu interaction in steps previous to the reduction one. This interaction most probably occurs during the drying step.
ISSN:	0021-9517 1090-2694
DOI:	10.1016/0021-9517(88)90063-2