Kinetically rate-determining step modulation by metal-support interactions for CO oxidation on Pt/CeO_(2)

作     者：Yanan Wang Chunlei Pei Zhi-Jian Zhao Jinlong Gong 

作者机构：Collaborative Innovation Center of Chemical Science and EngineeringKey Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical TransformationsTianjin 300072China Joint School of National University of Singapore and Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou 350207China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2022年第65卷第10期

页      面：2038-2044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] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Key R&D Program of China (2021YFA1501302) the National Natural Science Foundation of China (22121004,U1862207) the Haihe Laboratory of Sustainable Chemical Transformations and the Program of Introducing Talents of Discipline to Universities (BP0618007) for financial support supported by the XPLORER PRIZE 

主　　题：highly dispersed Pt/CeO_(2)catalysts single atom catalysis CO oxidation performance promotion rate-determining step modulation reaction kinetics 

摘      要：Rational design and performance promotion are eternal topics and ultimate goals in catalyst *** contrast,trial–and–error is still the common method people ***,it is important to develop methods to intrinsically enhance the performance of *** most effective solutions are the one from a kinetic perspective based on clear knowledge of the reaction *** paper describes rate-determining step cognition and modulation to promote CO oxidation on highly dispersed Pt on CeO_(2).The different degrees of metal–support interactions due to variation of hydroxyl density of support could alter the structure of active species and the ability of oxygen activation apparently,further shift the rate-determining step from oxygen activation to oxygen reverse spillover *** transformation of rate-determining step could enhance the intrinsic activity significantly,and decrease the T_(50) approximately 140℃.The findings of this research exemplify the universal and effective method of performance elevation by rate-determining step modulation,which is promising for application in different systems.