Effect of rare earth oxide on the catalytic performance of Au/CeO2 catalyst for water-gas shift reaction - Details

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Abstract：

A　series　of　Au/CeO2-RE2O3　(RE=Nd,　Eu,　Sm,　Y)　catalysts　and　Au/CeO2-Y2O3　catalysts　with　different　Y2O3　contents　were　prepared　by　a　deposition-precipitation　method.　The　as-prepared　catalysts　were　investigated　by　N2　adsorption-desorption,　X-ray　diffraction,　H2　temperature-programmed　reduction,　and　Raman　spectroscopy,　and　the　catalytic　performance　was　evaluated　using　water-gas　shift　(WGS)　reaction.　The　results　showed　that　the　catalyst　activity　and　stability　are　obviously　enhanced　with　the　addition　of　Y2O3,　and　the　best　one　was　found　to　be　the　sample　with　Ce/Y　molar　ratio　equal　to　35.　This　catalyst　shows　the　highest　structural　stability　and　a　large　amount　of　surface　oxygen　vacancies,　and　the　interaction　between　gold　and　the　support　is　also　greatly　enhanced.

Keyword：

Ceria; Gold; Rare earth oxide; Stability; Supported catalyst; Water-gas shift reaction; Yttria

Community：

[ 1 ] [Yang, S.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 2 ] [Zhan, Y.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 3 ] [Chen, C.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 4 ] [Cao, Y.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 5 ] [Lin, X.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 6 ] [Zheng, Q.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China

Reprint 's Address：

[Zheng, Q.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China

Email：

zhengqi@fzu.edu.cn

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Source ：

Chinese Journal of Catalysis

ISSN： 0253-9837

CN： 21-1601/O6

Year： 2009

Issue： 7

Volume： 30

Page： 666-672

0 . 7 8 6

JCR@2009

1 5 . 7 0 0

JCR@2023

JCR Journal Grade：3

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 2

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