Effect of promoter on the performance of low-temperature water-gas shift reaction in H2-rich steam over supported gold catalyst - Details

author：

Li, J.-W. (Li, J.-W..) ^[1] | Chen, C.-Q. (Chen, C.-Q..) ^[2] | Lin, X.-Y. (Lin, X.-Y..) ^[3] | Zheng, Q. (Zheng, Q..) ^[4]

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Abstract：

The　Au/α-Fe2O3-MOx　catalysts　(M　=　Zr,　Al,　Mg,　Ca,　Ba)　prepared　by　coprecipitation　method　were　characterized　by　BET,　XRD,　H2-TPR,　and　CO2-TPD-MS.　The　catalytic　performance　for　low-temperature　water-gas　shift　reaction　in　H2-rich　gas　was　investigated.　The　activity　and　stability　of　Au/α-Fe2O3-MOx　was　strongly　dependent　on　the　type　of　additive.　Among　the　tested　samples,　the　Au/α-Fe2O3　catalyst　modified　by　ZrO2　or　Al2O3　showed　highest　activity　and　stability.　On　the　contrary,　the　modification　by　MgO,　CaO,　and　BaO　resulted　in　an　activity　decrease.　The　structure　and　surface　analyses　revealed　that　zirconia　added　to　the　Au/α-Fe2O3　catalyst　increased　the　surface　area,　decreased　crystallite　size　of　support,　and　limited　the　growth　of　the　crystallite　size　of　support　during　the　catalytic　reaction.　The　addition　of　the　promoter　zirconia　and　alumina　changed　the　structure　and　performances　of　the　support　and　resulted　in　higher　activity　and　stability.

Keyword：

Additive; Au/α-Fe2O3; H2-rich; Low temperature water-gas shift reaction

Community：

[ 1 ] [Li, J.-W.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Chen, C.-Q.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Lin, X.-Y.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Zheng, Q.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

[Li, J.-W.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China

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Source ：

Journal of Fuel Chemistry and Technology

ISSN： 0253-2409

Year： 2006

Issue： 6

Volume： 34

Page： 712-716

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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