CO 2 Methanation on Nickel Catalysts Supported on Mesoporous High‐Surface‐Area MgSiO 3

Nickel catalysts prepared on high‐surface‐area mesoporous MgSiO 3 were synthesized and applied in methanation of CO 2 . N 2 adsorption analysis confirmed the presence of the mesoporous structure on the synthesized samples and revealed that the increase in nickel content resulted in a shift of the pore size distributions to smaller pore sizes. Temperature‐programmed reduction analysis illustrated an improvement in reducibility of the catalysts by a higher nickel content. Catalytic results indicated enhanced CO 2 conversion with the increase in nickel percentage up to 15 wt %. The catalysts with higher percentage of nickel provided lower CO 2 conversion and CH 4 selectivity. The %15Ni/MgSiO 3 catalyst exhibited high catalytic stability under optimized conditions.