燃料化学学报（中英文）2026，Vol.54Issue(3)：79-91,13.DOI:10.1016/S1872-5813(25)60613-X
制备方法对Co改性Ce/TiO2催化剂NH3-SCR脱硝性能的影响
Study on the effect of preparation method on denitration performance of Co-modified Ce/TiO2 catalyst
摘要
Abstract
This study systematically conducted preparation optimization and performance investigations on Co-modified Ce/TiO2 catalysts,with a focus on examining how preparation methods and Co loading regulate the catalyst's low-temperature denitrification activity.After identifying optimal preparation parameters via condition screening,multiple characterization techniques-including BET,XRD,XPS,H2-TPR and in situ DRIFTS-were employed to deeply analyze the catalyst's physicochemical properties and reaction mechanism.Results demonstrated that compared to the impregnation and co-precipitation methods,the Ce-Co0.025/TiO2-SG catalyst(prepared by the sol-gel method with a Co/Ti mass ratio of 0.025)exhibited significantly superior denitrification activity:NO conversion remained stably above 95％in the 225-350℃ temperature range,and it displayed high N2 selectivity.Characterization analysis revealed that abundant surface oxygen vacancies,a high proportion of Ce3+species,and prominent acidic sites collectively contributed to enhancing its low-temperature denitrification performance.This work provides reference value for the development of highly efficient low-temperature denitrification catalysts.关键词
制备方法/Co/Ce/TiO2/低温脱硝/NH3-SCRKey words
preparation method/Co/Ce/TiO2/low-temperature denitration/NH3-SCR分类
化学化工引用本文复制引用
宇超,张博雅,沈凯,韩宇轩,张亚平..制备方法对Co改性Ce/TiO2催化剂NH3-SCR脱硝性能的影响[J].燃料化学学报（中英文）,2026,54(3):79-91,13.基金项目
Supported by the National Key Research and Development Program of China(2023YFB4102903). （2023YFB4102903）
