CuO-ZnO/SiO₂ catalysts with various Zn/Cu molar ratios were prepared by precipitation and characterized by XRD, H₂-TPR, TEM, XAES and catalytic performance for hydrogenation of dimethyl oxalate. Characterizations revealed that suitable zinc incorporation resulted in higher Cu⁺ content on the surface of catalysts, better dispersion of Cu⁰ particles and better sintering resistance. Cu_0.8Zn_0.2/SiO₂ exhibited the best activity and sintering resistance with 99.5% DMO conversion and 91.5%selectivity to ethylene glycol, after deactivation treatment (T = 400 °C, H₂ atmosphere, 2.0 h), the catalyst maintained its activity with DMO conversion of 99.0%, while selectivity to ethylene glycol increased to 95.2%.

通过沉淀法制备了具有不同Zn / Cu摩尔比的CuO-ZnO / SiO ₂催化剂，并对其进行了XRD，H ₂ -TPR，TEM，XAES和表征，以及草酸二甲酯加氢的催化性能。表征表明，合适的锌掺入导致催化剂表面上更高的Cu ⁺含量，更好的Cu ⁰颗粒分散性和更好的抗烧结性。钝化处理后（T = 400°C，H _2），Cu _0.8 Zn _0.2 / SiO ₂表现出最好的活性和耐烧结性，DMO转化率为99.5％，对乙二醇的选择性为91.5％。 在2.0小时的大气压力下，催化剂保持其活性，DMO转化率为99.0％，而对乙二醇的选择性提高至95.2％。