Ruthenium Bisphosphine Catalyst on Functionalized Silica:Novel Efficient Catalyst for Carbon Dioxide

A novel efficient catalyst for the hydrogenation of carbon dioxide to formic acid ruthenium bisphosphine on functionalized silica was in situ synthesized, affording turnover frequency (TOF) of 1190 h-1 at 100% selectivity under 80C with total pressure of 16.0 MPa. The catalyst can be separated from the reaction mixture easily and reused with moderate loss of activity.