Carbon dioxide (CO₂) hydrogenation to methanation is a potential way for alleviating greenhouse effect and storing energy sources. Here, alumina supported Fe-Co catalysts were synthesized and used for the CO₂ methanation. Comparing with supported Fe/Al₂O₃ or Co/Al₂O₃ catalysts, the Fe-Co/Al₂O₃ catalysts showed superior catalytic performance under mild reaction conditions (280 °C and 0.2 MPa), whose reaction rate was 8.7 μmol·g_cat⁻¹·s⁻¹. It was 3 times higher than that of 2.4 μmol·g_cat⁻¹·s⁻¹ for the Fe/Al₂O₃ catalysts and 2.8 μmol·g_cat⁻¹·s⁻¹ for the Co/Al₂O₃ catalysts. Based on the comprehensive investigations by the temperature-programmed reduction by hydrogenation (H₂-TPR), in situ X-ray diffraction (XRD) and catalytic test in different integration manner of catalysts, the cooperative effect between Fe and Co was determined in the Fe-Co/Al₂O₃ catalyst. The presence of Fe effectively reduced the working pressure of the reaction and the Co directly acted on the CO₂ conversion and CH₄ formation. When compared to Fe/Al₂O₃ or Co/Al₂O₃ catalysts, the reducibility of metals and adsorption capacity for CO₂ and H₂ promoted a lot in the Fe-Co/Al₂O₃ catalyst, leading to the enhanced reactivity for CO₂ methanation.

二氧化碳（CO ₂）加氢甲烷化是缓解温室效应和储存能源的潜在途径。在此，合成了氧化铝负载的Fe-Co催化剂，并将其用于CO ₂甲烷化。与负载型Fe / Al ₂ O ₃或Co / Al ₂ O ₃催化剂相比，Fe-Co / Al ₂ O ₃催化剂在温和的反应条件（280°C和0.2  MPa）下显示出优异的催化性能，反应速率为8.7 μmol·g _cat ^-1 ·s ^-1。是2.4μmol·g _cat ^-1 ·s ^-1的3倍对于Fe / Al ₂ O ₃催化剂为2.8μmol·g _cat ^-1 ·s ^-1对于Co / Al ₂ O ₃催化剂为2.8μmol·g _cat ^-1 ·s ^-1。基于加氢程序升温还原（H ₂ -TPR），原位X射线衍射（XRD）和催化剂不同集成方式的催化试验的综合研究，确定了Fe和Co之间的协同作用。 Fe-Co / Al ₂ O ₃催化剂。Fe的存在有效地降低了反应的工作压力，并且Co直接作用于CO ₂转化和CH _4。编队。当与铁/铝₂ ö ₃或Co / Al的₂ ö ₃催化剂，金属和吸附容量为CO的还原₂和H ₂促进了很多在铁钴/铝₂ ö ₃催化剂，从而导致增强的CO ₂甲烷化反应性。