石油化工高等学校学报2024，Vol.37Issue(2)：42-49,8.DOI:10.12422/j.issn.1006-396X.2024.02.006
金属负载量对CuO/NiO-CeO2催化CO-Prox性能的影响
Effect of Metal Loading on Catalytic CO-Prox Performance of CuO/NiO-CeO2
摘要
Abstract
For the deep removal of CO from hydrogen-rich gas,the preparation of catalysts with better CO-Prox catalytic performance is a current research hotspot.CuO/NiO-CeO2 catalysts were prepared by stepwise impregnation method,and the catalysts were characterized by XRD,BET,H2-TPR and HR-TEM to investigate the effects of molar loading of metal Cu+Ni(metal loading)on the catalysts'structure,reduction properties and their CO-Prox performance.The results showed that Cu/Ni-O-Ce solid solutions were all formed in CuO/NiO-CeO2 catalysts.The catalytic activity is mainly related to the content of Cu species highly dispersed on the carrier surface as well as to the content of the solid solution.Among them,the catalyst with a metal loading of 8%had a higher content of Cu species highly dispersed on the carrier surface and a higher content of solid solutions,and the catalyst exhibited better catalytic activity.Under the CO/H2/CO2/O2/Ar atmosphere,a reaction temperature of 130 °C,an oxygen excess coefficient of 1.2,and a mass-air velocity of 20 266 mL/(g·h),the CO conversion was 95.9%,and the CO oxidation selectivity was 86.3%.关键词
金属负载量/CuO/NiO-CeO2/CO-Prox催化性能/高分散Cu物种/固溶体Key words
Metal loading/CuO/NiO-CeO2/CO-Prox catalytic performance/Highly dispersed Cu species/Solid solution分类
化学化工引用本文复制引用
徐琪杰,王宏浩,吕丽荣,姜雅新,侯晓宁,张磊,高志贤..金属负载量对CuO/NiO-CeO2催化CO-Prox性能的影响[J].石油化工高等学校学报,2024,37(2):42-49,8.基金项目
国家自然科学基金项目(22379059) （22379059）
辽宁省应用基础研究计划项目(2023JH2/101300224) （2023JH2/101300224）
辽宁省教育厅服务地方项目(LJKFZ20220201) （LJKFZ20220201）
辽宁省教育厅面上项目(LJKMZ20220728) （LJKMZ20220728）
山西省应用基础研究青年基金项目(20210302124338). （20210302124338）
