以钴、铜为活性金属,采用等体积浸渍法制备Co-Cu双金属催化剂,考察了不同载体的Co-Cu双金属催化剂对CH4-合成气梯阶转化直接合成C2+含氧化合物的影响,并进行了XRD、NH3-TPD和H2-TPR表征及相应的分析。实验结果表明,载体对催化剂催化性能有较大的影响,不同载体的催化剂对CH4-合成气两步梯阶转化反应的活性高低顺序为Co-Cu/TiO2>Co-Cu/Al2O3>Co-Cu/SiO2,Co-Cu/TiO2催化剂对C2+含氧化合物的选择性为79.9%。这归因于TiO2载体与活性金属Co、Cu之间适宜的相互作用及载体对Co-Cu良好的分散性能。此外,Co-Cu/TiO2催化剂还具有反应所需的表面酸量及适度的中强酸度。 The effect of Co-Cu bimetallic catalysts with different supports on the direct synthesis of C2 + oxygenates by stepwise conversion of CH4-syngas was investigated using cobalt and copper as the active metals. XRD, NH3-TPD and H2-TPR characterization and the corresponding analysis. The experimental results show that the support has a great influence on the catalytic performance of the catalyst. The order of the activities of the catalysts with different supports on the two-step conversion of CH4-syngas is Co-Cu / TiO2> Co-Cu / Al2O3> Co-Cu / SiO2, the selectivity of the Co-Cu / TiO2 catalyst to C2 + oxygenates is 79.9%. This is attributed to the proper interaction between the TiO2 support and the active metals Co, Cu and the good dispersibility of the support on Co-Cu. In addition, the Co-Cu / TiO2 catalyst also has the required surface acidity for the reaction and moderate moderately strong acidity.