Highly Efficient Synthesis of C2+ Oxygenates from CO Hydrogenation Over Rh–Mn–Li/SiO2 Catalyst: The Effect of TiO2 Promoter

Abstract

The effect of titanium promotion on the catalytic performance of Rh–Mn–Li catalyst supported on PVP-modified SiO2 for C2+ oxygenates synthesis from CO hydrogenation was investigated. The highest selectivity toward C2+ oxygenates (51.3%) was achieved over the RML/0.5Ti/SiO2 catalyst. Characterization results indicates that the addition of Ti promotes the adsorption of geminal CO and the formation of Rh+, which is favorable for the CO insertion into metal-CHx band, and finally increases the selectivity of C2+ oxygenates. The effect of titanium promotion on the catalytic performance of Rh–Mn–Li catalyst supported on PVP-modified SiO2 for C2+ oxygenates synthesis from CO hydrogenation was investigated. The highest selectivity toward C2+ oxygenates (51.3%) was achieved over the RML/0.5Ti/SiO2 catalyst