燃料化学学报（中英文）2026，Vol.54Issue(9)：109-120,12.DOI:10.1016/S1872-5813(26)60689-5
Sn修饰CuCeOx催化剂的高湿CO催化燃烧性能研究
Study on catalytic combustion performance of CO over Sn-modified CuCeOx catalysts under high humidity conditions
摘要
Abstract
Low-temperature CO oxidation technology has been widely applied in the field of environmental pollution control,yet challenges remain in CO purification under high-moisture environments.In this study,a series of CuCeOx-Sn catalysts supported on CeO2 were prepared via the excess impregnation method,and their catalytic performance in the low-temperature catalytic combustion of CO was systematically evaluated.The results indicate that CuCeOx-Sn0.1(with a Sn loading of 0.1％)exhibits the optimal low-temperature catalytic activity,with the lowest r50 and t90 values.The temperature for 90％CO conversion(t50 and t90)decreases progressively with increasing Sn loading up to 0.1％.Beyond this threshold,further Sn loading does not lead to a significant reduction in t90;in fact,t90 slightly increases compared to that observed at 0.1％Sn.Furthermore,this catalyst maintains stability during water-on/water-off switching tests,demonstrating excellent water resistance.Through characterization techniques including XPS,O2-TPD,CO-TPD and CO-TPSR,it is revealed that the introduction of Sn effectively increases the concentration of surface oxygen vacancies and promotes the activation and migration of surface adsorbed oxygen and lattice oxygen.关键词
Cu-Ce/Sn修饰/过量浸渍法/抗水性/CO催化氧化Key words
Cu-Ce/Sn modification/excess impregnation method/H2O resistance/CO catalytic oxidation分类
化学化工引用本文复制引用
薛俊涛,毕可涵,伍浩,黄潮,吕璟慧,张洋洋,翁育靖,张玉龙..Sn修饰CuCeOx催化剂的高湿CO催化燃烧性能研究[J].燃料化学学报（中英文）,2026,54(9):109-120,12.基金项目
Supported by Key Scientific and Technological Project of Henan Province(252102321085,252102320372)and the Key Scientific Research Projects of Colleges and Universities in Henan Province(26A150017,25B480002)and the Natural Science Foundation of Henan(242300421620)and the Fundamental Research Funds for the Universities of Henan Province(NSFRF240504,NSFRF240707). （252102321085,252102320372）
