通过溶胶-凝胶方法制备了一系列不同Zn含量的Cu-Mn-Zn/ZrO2催化剂，并通过XRD、BET、TPR、N2O吸附、XPS、TPD和 in-situ DRIFTS进行了表征。结果表明，随着Zn含量增加，催化剂上CO2加氢反应的活性增加。在所有样品中，Cu3MnZn0.5Zr0.5（CMZZ-0.5）在250 ℃和5 MPa条件下具有最高的CO2转化率（6.5%）和甲醇选择性（73.7%）。表征结果表明，Zn进入Cu1.5Mn1.5O4尖晶石结构，形成ZnOx，导致催化剂表面羟基含量的增加，同时增加了Cu0和Cuα+的含量，改善了H2和CO2的活化能力。此外，通过原位漫反射红外光谱研究了 CO2转化为甲醇的途径。

A series of Cu-Mn-Zn/ZrO2 catalysts with different Zn contents were prepared by sol-gel method and characterized by XRD, BET, TPR, N2O-adsorption, XPS, TPD and in-situ DRIFTS. It was found that by increasing a certain amount of Zn, the catalytic activity for CO2 hydrogenation increased. Among all samples, Cu3MnZn0.5Zr0.5 (CMZZ-0.5) possessed the best CO2 conversion (6.5%) and methanol selectivity (73.7%) at 250 °C and 5 MPa. Characterization results showed that Zn entered the Cu1.5Mn1.5O4 spinel structure, forming ZnOx and thus more surface OH groups. This increased the content of Cu0 and Cuα+, which improved the activation of H2 and CO2. The pathway of CO2 to methanol was also clarified through in-situ DRIFTS.