采用并流共沉淀法制备了CuO-ZnO-ZrO₂、CuO-ZnO-Al₂O₃和CuO-ZnO-MgO 3种三元铜基催化剂，在固定床连续流动微型反应器上进行催化试验，对比了不同催化剂的活性评价结果，并利用XRD、H₂-TPR、CO₂-TPD、N₂O滴定等手段对其进行表征。结果表明，ZrO₂代替三元铜基催化剂中的Al₂O₃和MgO可大大提高催化剂的活性。在250℃、3 MPa的条件下，CuO-ZnO-ZrO₂具有较高的催化活性，甲醇的选择性和产率在CuO-ZnO-MgO的基础上分别提高56%、58%，在CuO-ZnO-Al₂O₃的基础上分别提高31%、12%。

Three kinds of ternary Cu-based catalysts ingcluding CuO-ZnO-ZrO₂,CuO-ZnO-Al₂O₃ and CuO-ZnO-MgO are prepared by concurrent co-precipitation method,and their catalytic tests are carried out in a fixed-bed continuous flow micro-reactor.The activity evaluation results of these catalysts are compared,and these catalysts are characterized by XRD,H₂-TPR,CO₂-TPD and N₂O titration.The results show that ZrO₂ can give the catalyst higher activity than Al₂O₃ and MgO.CuO-ZnO-ZrO₂ exhibits high catalytic activity at 250℃,3 MPa.The selectivity and yield of methanol over CuO-ZnO-ZrO₂ are 56% and 58% respectively higher than that over CuO-ZnO-MgO,and 31% and 12% respectively higher than that over CuO-ZnO-Al₂O₃.

叶海船(1994-),男,硕士研究生,研究方向为CO₂加氢制甲醇催化剂,228986792@qq.com