RuCeTi催化剂制备及催化氧化氯苯

来源：中国环境科学杂志2024年第11期北京时间：

作者：王梦雪, 陈曦, 贾子良, 李书宁, 梁美生

单位：太原理工大学环境科学与工程学院, 大气复合污染识别与控制山西省重点实验室, 山西 晋中 030600

摘要：In this paper, a catalyst support (CeTi) with abundant strong acidic sites was prepared by sol-gel method, and Ru was loaded on to form a RuCeTi catalyst by chemical reduction process using a certain reductant. And that was used for the catalytic oxidation of chlorobenzene (CB). With the help of characterizations like XRD, HRTEM, XPS, H2-TPR, and in-situ DRIFTS, it showed that the interaction between Ru and CeO2 increased the valence state of Ru species, leading to the promotion of redox ability of RuO2 and the deep oxidation of chlorobenzene. Further the abundant strong acidic sites of the CeTi support provided the adsorption sites for CB. The activity tests showed that the CO2 selectivity and durability of RuCeTi were significantly enhanced, with a 98% of selectivity and 24h on-stream test at 1000×10-6 of CB concentration without deactivation. And that could be derived from the synergistic combination of reactive oxygen species and acidic sites.

关键词：氯苯,催化氧化,氧化还原,酸性位

基金资助：国家自然科学基金资助项目(22376156);山西省基础研究计划项目(20210302124478,202203021211140)