Construction of bimetallic Pt-Pd/CeO_(2)-ZrO_(2)-La_(2)O_(3) catalysts with different Pt/Pd ratios and its structure-activity correlations for three-way catalytic performance

作     者：Kai Chen Jie Wan Ting Wang Qi Sun Renxian Zhou Kai Chen;Jie Wan;Ting Wang;Qi Sun;Renxian Zhou

作者机构：Institute of CatalysisZhejiang UniversityHangzhou 310028China Energy Research InstituteNanjing Institute of TechnologyNanjing 211167China School of Environmental EngineeringNanjing Institute of TechnologyNanjing 211167China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2023年第41卷第6期

页      面：896-904,I0004页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 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：Project supported by the Key Program of Science Technology Department of Zhejiang Province(2018C03037) the Natural Science Foundation of Jiangsu Province(BK20201037) Jiangsu Industry-University-Research Cooperation Project(BY2022101) the Scientific Research Fund of Nanjing Institute of Technology(YKJ2019111) Students'Science and Technology Innovation Fund of Nanjing Institute of Technology(TB202312034) 

主　　题：Three-way catalyst Bimetallic Metal-support interaction Dispersion Dynamic oxygen storage/release capacity Rare earths 

摘      要：A series of Pt-Pd bimetallic catalysts supported on CeO_(2)-ZrO_(2)-La_(2)O_(3) mixed oxides were synthesized through the conventional impregnation ***-way catalytic performance evaluations along with detailed physio-chemical characterizations were carried out to establish possible structure-activity *** show that on the one hand,different Pt/Pd ratios can strongly affect the TWC behaviors of Pt-Pd/CZL catalysts by modulating the synergistic effect between Pt and *** the other hand,higher Pt/Pd ratio also favors better dispersion of precious *** improved precious metals(PM)dispersion can promote the metal-support interaction and increase the surface oxygen vacancies concentration,thereby raising the dynamic oxygen storage/release capacity,improving the redox ability as well as enha ncing the thermal stability of the Pt-Pd/CZL ***,the stro ng metal-support interaction can augment surface oxygen vacancy concentration,thereby benefiting low temperature CO and NO reaction via augmented NOxadsorption and nitrate conversion.