Design Strategy toward Recyclable and Highly Efficient Heterogeneous Catalysts for the Hydrogenation of CO2 to Formate

Abstract

One bottleneck in the realization of CO2 conversion into valueadded compounds is the lack of catalysts with both excellent activity and recyclability. Herein, a catalyst is designed for the hydrogenation of CO2 to formate to boost up these features by considering the leaching pathway of previously reported heterogenized catalyst

the design strategy incorporates oxyanionic ligand(s) in the coordination sphere to provide a pathway for both preventing the deleterious interactions and assisting the heterolysis of H2. The tailored heterogenized catalyst, [bpy-CTF-Ru(acac)2]Cl, demonstrated excellent recyclability over consecutive runs with a highest turnover frequency of 22 700 h&#8722

1, and produced a highest formate concentration of 1.8 M in 3 h. This work is significant in elucidating new principles for the development of industrially viable hydrogenation catalysts.