Effect of silica support on Ru-Cu cluster morphology as determined by catalytic activity

摘要: Several silica supports impregnated with 1% Ru and a 1:1 atomic ratio of Ru:Cu in the bimetallic catalysts have been characterized by H/sub 2/ chemisorption, temperature programmed desorption re-reduction, several catalytic reactions varying structure sensitivity. Clusters Ru-Cu on one silicas, Cab-O-Sil HS5, is distinguished fact that only this support hydrogen chemisorption suppressed added Cu. It postulated morphology clusters HS5 involves Cu-rich mixture Cu core. other silicas appear to be more heterogeneous an associated pure phase. Hydrogen spillover occurs latter both are HS5.