Improved performance of Au/Fe2O3 catalysts promoted with ZrO2 and Nb2O5 in the WGS reaction under hydrogen-rich conditions - Details

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Abstract：

Effect　of　addition　of　the　ZrO2　and　Nb2O5　promoters　on　the　activity　and　stability　of　the　Au/Fe2O3　catalysts　in　the　WGS　reaction　under　hydrogen-rich　conditions　was　studied.　Results　showed　that　this　new　catalyst　possesses　enhanced　activity　and　stability　under　conditions　common　in　fuel　processors.　Its　CO　conversion　almost　reached　the　maximum　value　99%　at　200°C　and　maintained　better　stability　compared　with　unmodified　samples　within　50　h　on-stream.　Detailed　characterization　including　BET,　XRD,　HRTEM,　XPS,　XRF　and　H2-TPR　revealed　that　ZrO2　and　Nb2O5　acted　as　structural　promoters　and　a　strong　interaction　between　ZrO2　and　Nb2O5　existed.　The　enrichment　of　Zr　and　Nb　on　the　surface　kept　the　gold　and　magnetite　particles　apart　delaying　sintering.　More　active　gold　sites,　larger　surface　area　and　smaller　magnetite　particles　were　the　main　reasons　for　the　enhanced　performance.　©　2006　Springer　Science+Business　Media,　Inc.

Keyword：

Gold; Iron oxide; Niobium oxide; Promoters; Water-gas shift; Zirconium oxide

Community：

[ 1 ] [Zhang, F.]National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, Fuzhou 350002, China
[ 2 ] [Zheng, Q.]National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, Fuzhou 350002, China
[ 3 ] [Wei, K.]National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, Fuzhou 350002, China
[ 4 ] [Lin, X.]National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, Fuzhou 350002, China
[ 5 ] [Zhang, H.]Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
[ 6 ] [Li, J.]National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, Fuzhou 350002, China
[ 7 ] [Cao, Y.]Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China

Reprint 's Address：

[Zheng, Q.]National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Gongye Road 523, Fuzhou 350002, China

Email：

qizheng2005@gmail.com

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Source ：

Catalysis Letters

ISSN： 1011-372X

Year： 2006

Issue： 3-4

Volume： 108

Page： 131-136

1 . 7 7 2

JCR@2006

2 . 3 0 0

JCR@2023

JCR Journal Grade：3

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WoS CC Cited Count：

SCOPUS Cited Count： 28

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 1

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