文献类型：期刊文献

中文题名：CO catalytic oxidation over Pd/CeO2 with different chemical states of Pd

作者：Guo-Feng Zhou[1];Jian Ma[2];Shan Bai[3];Li Wang[2];Yun Guo[2]

机构：[1]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;[2]Research Institute of Industrial Catalysis,East China University of Science and Technology,Shanghai 200237,China;[3]Equipment R&D Center,China Nuclear Power Technology Research Institute,Shenzhen 518000,China

年份：2020

卷号：39

期号：7

起止页码：800

中文期刊名：Rare Metals

外文期刊名：稀有金属（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；PubMed;

基金：financially supported by the National Key Research and Development Program of China(No.2016YFC0204300);the National Natural Science Foundation of China(Nos.21171055 and 21571061)。

语种：英文

中文关键词：Supported Pd catalyst;CeO2;Chemical state of Pd;CO oxidation

摘要：Three Pd/CeO2 catalysts were,respectively,prepared by reduction-deposition and impregnation method(IMP)to investigate the effect of chemical state of Pd on CO oxidation.Two kinds of surface Pd species,namely PdO and Pdδ+(2<δ≤4)in PdxCe1-xO2,were identified in all Pd/CeO2 samples although their relative ratios in each sample were different.Surface PdxCe1-xO2 species were found to be very active for CO oxidation,and it could act as a channel by which active oxygen species can be transferred from CeO2 to Pd species for CO oxidation.Our results reveal that the preparation method can severely influence the chemical state of Pd which can further determine the activity for CO oxidation.