The Effect of Co Loading on the Performance of Co_xMn_0.06/SiO₂ Catalysts for the Synthesis of Light Hydrocarbons from CO Hydrogenation

Abstract

A series of Co_xMn_0.06/SiO₂ catalysts, which were used for the synthesis of light hydrocarbons from CO hydrogenation, were prepared. The effects of reaction temperature, the morphological and structural properties of the catalysts on the CO conversion and product selectivity were examined. The results show that both CO conversion and C₂ to C₄ hydrocarbon selectivity are significantly affected by the amount of Co loaded onto the catalysts. The optimum Co content was determined to be 10 wt% (i.e., for Co_0.10Mn_0.06/SiO₂) catalyst, and corresponding CO conversion and the selectivity to C₂ to C₄ hydrocarbons are 95.3 and 80.6%, respectively, at 400°C.

Keywords:

• agglomerated cobalt
• Co_xMn_0.06/SiO₂ catalysts
• light hydrocarbons
• syngas