CO2 Methanation on Nickel Catalysts Supported on Mesoporous High‐Surface‐Area MgSiO3

Nickel catalysts prepared on high‐surface‐area mesoporous MgSiO₃ were synthesized and applied in methanation of CO₂. N₂ 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 CO₂ conversion with the increase in nickel percentage up to 15 wt %. The catalysts with higher percentage of nickel provided lower CO₂ conversion and CH₄ selectivity. The %15Ni/MgSiO₃ catalyst exhibited high catalytic stability under optimized conditions.