Acid-assisted hydrogenation of CO2 to methanol using Ru(ii) and Rh(iii) RAPTA-type catalysts under mild conditions

A highly efficient homogeneous catalyst system for production of CH3OH from CO2 using single molecular defined ruthenium and rhodium RAPTA-type catalysts [Ru(eta(6)-p-cymene)X-2(PTA)] (X = I(1), Cl(2); PTA = 1,3,5-triaza-7-phosphaadamantane) and rhodium catalysts [Rh(eta(5)-C5Me5)X-2(PTA/PTA-BH3)] (X = Cl(3), H(4) and PTA-BH3, H(5)) developed in acidic media under mild conditions. A TON of 4752 is achieved using a [Ru(eta(6)-p-cymene)I-2(PTA)] catalyst which represents the first example of CO2 hydrogenation to CH3OH using single molecular defined Ru and Rh RAPTA-type catalysts.

Automated summary

A highly efficient homogeneous catalyst system for the production of CH3OH from CO2 has been developed using single molecular defined ruthenium and rhodium RAPTA-type catalysts in acidic media under mild conditions. The system achieved a turnover number (TON) of 4752, representing the first example of CO2 hydrogenation to CH3OH using single molecular defined Ru and Rh RAPTA-type catalysts.