In this paper, Co_xMn_1−xCeO_δ mixed oxides were synthesized using a co-precipitation method. The catalyst’s performance for the benzene combustion reaction was evaluated, and Co_0.25Mn_0.75CeO_δ (CMC-0.25) exhibited good catalytic activity, stability and CO₂ selectivity. The prepared catalysts were characterized and analyzed completely by XRD, BET, Raman, TEM and HRTEM, XPS, H₂-TPR, and O₂-TPD. The results demonstrated that a solid solution was formed with more active oxygen induced by Co doping. Strong interaction effects among Co-Mn-Ce-O were speculated as the main mechanisms underlying the high-efficiency catalytic capacity. The prepared Co-doped Mn-Ce mixed oxides catalyst may be a potential low-cost catalyst alternative to replace industrial noble metal catalysts.

在本文中，钴_X的Mn _1-x的CeO _δ使用共沉淀法的混合氧化物合成。该催化剂对苯燃烧反应性能进行了评估，以及Co _0.25锰_0.75的CeO _δ（CMC-0.25）显示出良好的催化活性，稳定性和CO ₂的选择性。通过XRD，BET，拉曼，TEM和HRTEM，XPS，H ₂ -TPR和O ₂对制备的催化剂进行表征和分析。-TPD。结果表明，固溶形成了更多的由Co掺杂诱导的活性氧。据推测，Co-Mn-Ce-O之间的强相互作用是潜在的高效催化能力的主要机理。制备的Co-掺杂的Mn-Ce混合氧化物催化剂可能是替代工业贵金属催化剂的潜在低成本催化剂替代品。