燃料化学学报（中英文）2024，Vol.52Issue(4)：565-576,12.DOI:10.19906/j.cnki.JFCT.2023080
CO优先氧化反应MnCu/Ce催化剂的制备及性能
Preparation and properties of MnCu/Ce catalyst for CO preferential oxidation reaction
摘要
Abstract
The MnCu/Ce catalyst with a lower Cu content was prepared by co-impregnation method,and then was characterized by XRD,BET,H2-TPR,XPS and CO2-TPD.The effects of calcination temperature on the structure and properties of the catalyst and the preferential oxidation of CO in a hydrogen-rich atmosphere containing CO2 were investigated.The results indicated that Cu/Mn-O-Ce solid solution was formed in all MnCu/Ce catalysts.Of theses sample,the one calcined at 600 ℃ had strong interaction among Mn,Cu and Ce,formed more ternary oxide solid solution with more oxygen vacancies/Ce3,and revealed good CO-Prox activity.In addition,it was found that the addition of different percentage of Ar had little effects on the CO-Prox activity of the catalyst,while the space velocity and oxygen excess coefficient had great effects on the catalytic performance,and the presence of CO2 in the reaction feedstock gas had a negative effect on the CO-Prox reaction.At an oxygen excess coefficient of 1.2 and the space velocity of 20266-30400 mL/(g·h),the highest CO conversion rate reached 94.7％.关键词
低含量铜/焙烧温度/氧化铈/CO2/H2气氛/反应条件Key words
low content copper/roasting temperature/cerium oxide/CO2/H2 atmosphere/reaction condition分类
化学化工引用本文复制引用
武嘉欣,高志贤,韩蛟,李学,邢月,张财顺,刘道胜,侯晓宁,刘雅杰,张磊..CO优先氧化反应MnCu/Ce催化剂的制备及性能[J].燃料化学学报（中英文）,2024,52(4):565-576,12.基金项目
The project was supported by National Natural Science Foundation of China(22379059),Applied Basic Research Program Project of Liaoning Province(2023JH2/101300224),Service Local Project of the Education Department of Liaoning Province(Enlisting and Leading)(LJKFZ20220201),General Project of the Educational Department of Liaoning Province(LJKMZ20220728),Fundamental Research Program(Free Exploration)of Shanxi Province(20210302124338),Supported by Talent Scientific Research Fund of Liaoning Petrochemical University(2019-XJJL-028).国家自然科学基金(22379059),辽宁省应用基础研究计划项目(2023JH2/101300224),辽宁省教育厅服务地方项目(揭榜挂帅)(LJKFZ20220201),辽宁省教育厅面上项目(LJKMZ20220728),山西省应用基础研究青年基金项目(20210302124338)和辽宁石油化工大学引进人才科研启动基金资助项目(2019-XJJL-028) （22379059）
