中文摘要：

采用浸渍法制备Zn促进的活性炭（AC）载Cu催化剂CuZn/AC,考察了浸渍顺序和Zn加入量对催化剂的甲醇液相氧化羰基化合成碳酸二甲酯（DMC）性能的影响。采用XRD,H2-TPR,CO-TPD,AAS和TEM表征催化剂结构和表面性质。结果表明,共浸渍法制备的催化剂与分步浸渍法相比,其分散性和催化性能优于分步浸渍法制备的催化剂。共浸渍法引入适量的Zn可提高CuZn/AC催化剂的铜物种分散性和还原后的催化剂的Cu0含量,从而提高了催化剂活性。w（Zn）为2%的10Cu-2Zn/AC催化剂的催化性能最佳,甲醇转化率和DMC选择性分别为10.5%和95.1%。

英文摘要：

Zn-promoted Cu/AC catalysts CuZn/AC were prepared by impregnation method, and the effects of impregnation sequence and Zn loading amount on the catalytic performance of the catalysts for liquid-phase oxidative carbonylation of methanol to dimethyl carbonate（DMC） were investigated. The microstructure and surface property of the catalysts were characterized by XRD,H2-TPR, CO-TPD, AAS and TEM. The results showed that the catalysts prepared by the co-impregnation method had better dispersion and catalytic performance compared with the separated impregnation method. Adding an appropriate amount of Zn by using co-impregnation method could improve the dispersion of copper species of the CuZn/AC catalysts and increase the CuO amount of the reduced catalysts, which contributed to the improvement of catalytic performance. The 10Cu2Zn/AC with Zn of 2% by mass exhibited the best catalytic activity, and the conversion of methanol and the selectivity of DMC were 10.58% and 95.15%,respectively.