High catalytic performance of CuCe/Ti for CO oxidation and the role of TiO_(2)

作     者：Tingting Chang Ziyan Wang Zhimiao Wang Hualiang An Fang Li Wei Xue Yanji Wang Tingting Chang;Ziyan Wang;Zhimiao Wang;Hualiang An;Fang Li;Wei Xue;Yanji Wang

作者机构：Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy SavingSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300130China Purification Equipment Research Institute of CSICHandan 056027China Tianjin Key Laboratory of Chemical Process SafetyTianjin 300130China Hebei Industrial Technology Research Institute of Green Chemical IndustryHuanghua 061100China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2023年第62卷第10期

页      面：1-10页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(U21A20306,U20A20152) Natural Science Foundation of Hebei Province(B2022202077) 

主　　题：CO oxidation TiO_(2)crystal phase CuCe/Ti Reaction mechanism 

摘      要：CuCe/Ti-A and CuCe/Ti-R catalysts were prepared using anatase TiO_(2)(TiO_(2)-A)and rutile TiO_(2)(TiO_(2)-R)as supports using the incipient wetness impregnation method for the carbon monoxide(CO)oxidation reaction and were compared with a CuCe-C catalyst prepared using the co-precipitation *** CuCe/Ti-A catalyst exhibited the highest activity,with complete CO conversion at 90℃,when the gas hourly space velocity was 24000 ml.g^(-1).h^(-1) and the CO concentration was approximately 1%(vol).A series of characterizations of the catalysts revealed that the CuCe/Ti-A catalyst has a larger specific surface area,more Cu+species and oxygen vacancies,and the Cu species of CuCe/Ti-A catalyst is more readily *** situ FT-IR results indicate that the bicarbonate species generated on the CuCe/Ti-A catalyst have lower thermal stability than the carbonate species on CuCe/Ti-R,and will decompose more readily to form CO_(2).Therefore,CuCe/Ti-A has excellent catalytic activity for CO oxidation.