低碳化学与化工2025，Vol.50Issue(2)：31-37,7.DOI:10.12434/j.issn.2097-2547.20240238
Cu/MoX催化剂的RWGS反应催化性能研究
Study on catalytic performances of Cu/MoX catalysts in RWGS reaction
摘要
Abstract
The reverse water gas shift(RWGS)reaction can not only achieve CO2 conversion,but also be a key step in the process to produce CO,and it is of great significance to develop efficient RWGS catalysts.MoO3 can catalyze RWGS reaction,but it has the problems of low CO2 conversion rate,high activation temperature,etc.Cu has good CO2 catalytic hydrogenation activity,and is often used as the active phase of CO2 hydrogenation catalysts,which has a great application prospect in the field of RWGS.Cu/MoCe,Cu/MoTi and Cu/MoGa catalysts were prepared by co-precipitation,and the physicochemical properties and configuration-activity relationships of the catalysts were explored through characterization and activity testing.The results show that Cu/MoCe catalyst has the highest activity with the CO yield of 47.9%at the reaction temperature of 500℃,n(H2):n(CO2)of 4:1 and the space velocity of 30000 mL/(g·h).The smaller grain size of the solid solution phase CuMoO4 in Cu/MoCe catalyst,the formation of Ce-O-Mo asymmetric oxygen vacancies in the supports,the redox cycle between Ce3+/Ce4+ion pairs and the synergistic effect between oxygen vacancies and active phases jointly promote the RWGS reaction,which make Cu/MoCe catalyst exhibits great catalytic activity and provides a new idea for the design of RWGS catalysts.关键词
逆水煤气变换反应/Cu基催化剂/氧空位/CO2转化Key words
reverse water gas shift reaction/Cu-based catalysts/oxygen vacancies/CO2 conversion分类
化学化工引用本文复制引用
戴卉,蒋洋洋,周昌健..Cu/MoX催化剂的RWGS反应催化性能研究[J].低碳化学与化工,2025,50(2):31-37,7.基金项目
四川省自然科学基金(2023NSFC1103) （2023NSFC1103）
成都理工大学教师发展启动基金(10912-KYQD2022-07266). （10912-KYQD2022-07266）
