A novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) composite oxide with surface doping of Y and its application in Pd-only three-way catalyst

作     者：Zheng Zhao Wei-Xin Zhao Yong-Qi Zhang Mei-Sheng Cui Yong-Ke Hou Dong-Ming Chen Juan-Yu Yang Zong-Yu Feng Xiao-Wei Huang Zheng Zhao;Wei-Xin Zhao;Yong-Qi Zhang;Mei-Sheng Cui;Yong-Ke Hou;Dong-Ming Chen;Juan-Yu Yang;Zong-Yu Feng;Xiao-Wei Huang

作者机构：National Engineering Research Center for Rare EarthGrirem Advanced Materials Co.Ltd.GRINM Group Corporation LimitedBeijing100088China Griem Hi-Tech Co.Ltd.Langfang065000China Rare Earth Functional Materials(Xiong’an)Innovation Venter Co.Ltd.Baoding071700China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2024年第43卷第2期

页      面：749-757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：This study was financially supported by the National Natural Science Foundation of China(No.52204376) Youth Foundation of Hebei Province(No.E2022103007) Young Elite Scientists Sponsorship Program by CAST 2021QNRC001 High Tech Zone Science and Technology Project of Yanjiao(No.YJXM211211) Youth Fund Project of GRINM(No.G12620223129035) 

主　　题：Rare earth Ceria-zirconia-supported Pd Surface doping Experiment and theory Catalytic application 

摘      要：The ceria-zirconia compound oxide-supported noble metal Pd(Pd@CZ)is widely used in three-way ***,the surface structure of CZ plays an important role in catalytic activity of ***,how to regulate the surface structure of CZ and clarify the structure–activity relationship is still a *** this paper,a strategy is proposed to develop high activity Pd@CZ nanocatalysts by tuning Y doping sites in *** precipitate-deposition method is developed to prepare the novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) composite with surface doping of Y(CZ-Y-S).In addition,the Pd@CZ-Y-S(Pd supported on CZ-Y-S)exhibits superior catalytic activity for HC,CO,and NO oxide,wherein,for CO and C_(3)H_(6) oxidation,the low-temperature activity of Pd@CZ-Y-S is still 20%higher than that of Pd@CZ-Y-B(Y bulk doping)and commercial Pd@CZ after 1000℃/4 h *** effect mechanism is further studied by density functional theory(DFT)*** with Pd@CZ-Y-B,Pd@CZ-Y-S shows the lower CO oxide reaction energy barriers due to the weaker adsorption strength of *** Y surface doping strategy could provide valuable insights for the development of highly efficient Pd@CZ catalyst with extensive applications.