Surface pits stabilized Au catalyst for low-temperature CO oxidation

作     者：Ya-Feng Cai Chen Fei Cheng Zhang Jie Yang Li Wang Wang-Cheng Zhan Yang-Long Guo Xiao-Ming Cao Xue-Qing Gong Yun Guo Ya-Feng Cai;Chen Fei;Cheng Zhang;Jie Yang;Li Wang;Wang-Cheng Zhan;Yang-Long Guo;Xiao-Ming Cao;Xue-Qing Gong;Yun Guo

作者机构：Key Laboratory for Advanced Materials and Research Institute of Industrial CatalysisSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第9期

页      面：3060-3068页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：financially supported by the National Key Research and Development Program of China(No.2016YFC0204300) the National Natural Science Foundation of China(Nos.21571061,21333003 and 21908079) Pujiang Program of the Shanghai Municipal Human Resources and Social Security Bureau(No.18PJD011)。 

主　　题：Au catalyst CeO_(2) Surface defect Stability CO oxidation 

摘      要：Development of active and stable catalysts for low-temperature CO oxidation has long been regarded as a hot topic.In this contribution,we used CeO_(2) with high-density surface pits as support to prepare an active and stable Au/CeO_(2) catalyst by an adsorption-deposition method.The obtained 0.05 wt%Au/CeO_(2)-TD(where TD represents thermal decomposition)can maintain its activity at 80℃ for more than 20 h or even after calcination at 800℃ for 2 h.The characterization results showed that the high-density surface pits on CeO_(2)-TD play a decisive role in the stabilization of Au and enhancement of the redox property.This work may provide a new strategy to improve the stability of supported metal catalysts by a simple and conventional method.