Catalytic hydrogenation of CO2 for methanol production in fixed-bed reactor using Cu-Zn supported on gamma-Al2O3.

The utilization of carbon dioxide (CO 2 ) have been a lot of attention nowadays many researchers are trying to convert to methanol which has high demand in the terms of energy and chemical feedstock. The catalytic CO 2 hydrogenation was performed in continuous fixed-bed reactor. In this study, the influent of calcination temperatures over a series of copper-based catalyst with different promoted loading such as zinc, which prepared via impregnation methods supported on gamma-alumina were investigated. The characterization of the catalysts was studied using BET, TPR and XRD. The highest concentration of methanol converted from CO 2 was found at bimetallic copper-zinc catalyst with molar ratio of 1:1 and calcination temperature of 300 °C STY of 16.36 gkg Cat -1 h -1 with MeOH selectivity as 22.54%. [ABSTRACT FROM AUTHOR]