Synergistic effect of catalyst basicity and reducibility on performance of ternary CeO₂-based catalyst for CO₂ OCM to C₂ hydrocarbons

The present investigation focuses on the synergistic effect of catalyst basicity and reducibility on the catalytic activity of binary and ternary CeO₂-based catalysts in the CO₂ oxidative coupling of methane (CO₂ OCM). Proper amount of medium and strong basic sites together with lower amount of very strong basic sites are identified as pertinent factors in increasing the catalytic performance. The CO₂-TPD and H₂-TPR studies indicate synergistic effect between the catalyst basicity and reducibility for the 12.8CaO-6.4MnO/CeO₂ ternary metal-oxide catalyst in enhancing the CO₂ OCM performance.