Hydrochlorination of Acetylene Catalyzed by Copper‐Phosphorous Complex

ABSTRACT Because of the toxicity of traditional mercury catalysts, more economical and efficient nonprecious metal catalysts have attracted considerable concern in acetylene hydrochlorination reaction. Here, a series of copper‐based catalysts coordinated with P‐containing ligands were prepared by the incipient wetness impregnation method. The 12.5Cu‐2L 7/1 /AC catalyst (2L = tris(3‐methylpheny) phosphine) achieved the initial acetylene conversion of 87.13%, which was 47.68% higher than that of 12.5Cu/AC under the acetylene gas hourly space velocity of 180 h −1 . The characterization results displayed that the employment of tris(3‐methylpheny) phosphine not only constructed highly dispersed and hypervalent Cu‐P/Cu‐O‐P active species but also improved the adsorption capacity of the catalyst to reactants and the ability of anticoke deposition, thereby improving the catalytic activity and stability of Cu‐based catalysts.