中文摘要：

分别采用体相模板法和表面模板法制备了铜改性Ce O2催化剂（Cu O-Ce O2和Cu O/Ce O2）。利用XRD、N2吸附-脱附、Raman、H2-TPR对催化剂进行了表征并考察了其催化氧化HCl制Cl2的性能。结果表明：体相模板法更有利于制备铜物种分散度更高的催化剂,提高催化剂表面氧空位的浓度。将催化剂表面氧空位浓度与HCl催化氧化活性关联发现,催化剂氧空位浓度是影响HCl催化氧化活性的重要因素。酸洗前后催化剂催化活性对比表明,高分散的Cu O在较低温度时对催化剂活性贡献不大,而在较高温度时可以有效促进催化剂催化性能。晶相Cu O对HCl的催化氧化活性没有贡献。

英文摘要：

Copper modified Ce O2 catalysts（Cu O-Ce O2 and Cu O/Ce O2） were prepared by bulk-template and surface-template methods, respectively. The catalysts were characterized by XRD, N2 adsorption-desorption, Raman and H2-TPR. The performance of the catalysts for gas-phase HCl catalytic oxidation to prepare Cl2 was also investigated. The results of XRD, Raman and H2-TPR show that the bulk-template method is favorable in preparing catalysts with higher copper dispersion, which could improve oxygen vacancy concentrations of the catalysts. It is found that the oxygen vacancy concentration is the key factor in determining the catalytic activity after studying the relationship between these two parameters. The catalytic activities of the catalysts before and after acid treatment show that highly dispersed Cu O contributes little on catalytic activity under low temperatures, but it could effectively promote catalytic performance under higher temperatures. However, crystallized Cu O contributes little on catalytic activity.