Effects of Rh content on catalytic behavior in CO hydrogenation with Rh-silica catalysts prepared using microemulsion

Rh-silica catalysts having the same physical parameters despite their diffe rent Rh contents were prepared using water-in-oil (w/o) microemulsions, and the effects of Rh content on the catalytic behavior were investigated in t he hydrogenation of carbon monoxide. It was found that both the product sel ectivity and the turnover frequency changed dramatically with the Rh conten t. The selectivity to C2+ oxygenated compounds increased with increasing Rh content, while the selectivity to hydrocarbons and the turnover frequency decreased.