Hydrogenation of CO2 into Formates by Ligand‐Capped Palladium Heterogeneous Catalysts

Abstract The synthesis of two series of catalysts based on ligand‐capped supported Pd nanoparticles was carried out using a simple procedure and the resulting materials were tested in the formate synthesis. Within these series, PPh 3 revealed the most appropriate stabilizing ligand while TiO 2 was the most efficient support for these catalysts. The hydrogenation of CO 2 was carried out under mild reaction conditions (1.8 MPa CO 2 , 1.8 MPa H 2 , 60 °C) using water as solvent and in the presence of a base, providing excellent selectivity towards formates with a TON of 1032 (TOF of 69 h −1 , [HCOOK]=1.1 mol/l).