Production of methanol from СО<sub>2</sub> on Cu-Zn-catalysts applied on commercial supports: impact of support and reaction conditions

Catalytic properties of Cu-Zn-catalysts on various commercial supports such as Al2O3, SiO2, ZrO2(La), TiO2, ZnO, and activated carbon in the reaction of CO2 hydrogenation with methanol production are studied. The CuZn/Al2O3 catalyst is found to show the highest CO2 conversion; the highest selectivities to methanol equaling 99% and 97.5% are observed in CuZn/ZrO2(La) and CuZn/SiO2 catalysts, respectively, and high CH3OH selectivities of 90–95% are achieved in the temperature range of 175-275°C; and the CuZn/ZrO2(La) catalyst had the highest methanol productivity of 547 g/(kgcat h). The synthesized catalysts are characterized by methods of low-temperature nitrogen adsorption, X-ray phase analysis, and SEM-EDX.