Bimetallic Rh-Ge and Pt-Ge catalysts supported on TiO2 for citral hydrogenation: II. Catalytic properties
作者： T. Ekou , A. Vicente , G. Lafaye , C. Especel , P. Marecot
DOI: 10.1016/J.APCATA.2006.08.004
关键词: Rhodium 、 Catalysis 、 Heterogeneous catalysis 、 Inorganic chemistry 、 Selectivity 、 Chemistry 、 Bimetallic strip 、 Selective catalytic reduction 、 Catalyst support 、 Transition metal
摘要: Abstract Bimetallic Rh-Ge/TiO 2 and Pt-Ge/TiO catalysts prepared by surface redox reaction (catalytic reduction method) were tested for the selective hydrogenation of citral. Samples reduced either at 300 °C or 500 °C (SMSI effect). For both Rh Pt series, unsaturated alcohols (UA) selectivity goes through an optimum as a function germanium content whatever temperature. low Ge loadings, it was possible to combine bimetallic SMSI effects, inducing high UA on supported TiO . On other hand, loadings effect predominant led also selectivity. Moreover, support contributed stabilize Rh-Ge Pt-Ge particles catalytic toward air exposure ambient
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