Development of Au/CeCO2 catalysts for preferential oxidation of CO in PEMFC

Whan Soo Shin; Chang Ryul Jung; Jonghee Han; Suk Woo Nam; Tae Hoon Lim; Seong Ahn Hong; Ho In Lee

Development of Au/CeCO₂ catalysts for preferential oxidation of CO in PEMFC

Whan Soo Shin, Chang Ryul Jung, Jonghee Han, Suk Woo Nam, Tae Hoon Lim, Seong Ahn Hong, Ho In Lee

Research output: Contribution to journal › Article › peer-review

Abstract

The preferential oxidation (PROX) of CO in an H₂-rich stream was investigated over Au/MO_x (M = Ti, Al, Fe, Ce) catalysts. It was found that 2.5 wt% Au/CeO₂ showed the best activity for the reaction. Ceria itself had catalytic activity for the reaction and the activity increased with its decreasing crystallite size. In addition, the effect of Au particle size was investigated by means of XRD, TEM, TPR, and FT-IR spectroscopy of chemisorbed CO. This analysis showed that the number of active sites increased with decreasing Au particle size. This effect caused changes in the intensity of the FT-IR spectra of the adsorbed CO and in the reduction temperature of the catalysts.

Original language	English
Pages (from-to)	302-308
Number of pages	7
Journal	Journal of Industrial and Engineering Chemistry
Volume	10
Issue number	2
Publication status	Published - 2004

Keywords

Au particle size
CO adsorption
CeO crystallite size
PEMFC
PROX

ASJC Scopus subject areas

Chemical Engineering(all)

Cite this

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title = "Development of Au/CeCO2 catalysts for preferential oxidation of CO in PEMFC",

abstract = "The preferential oxidation (PROX) of CO in an H2-rich stream was investigated over Au/MOx (M = Ti, Al, Fe, Ce) catalysts. It was found that 2.5 wt% Au/CeO2 showed the best activity for the reaction. Ceria itself had catalytic activity for the reaction and the activity increased with its decreasing crystallite size. In addition, the effect of Au particle size was investigated by means of XRD, TEM, TPR, and FT-IR spectroscopy of chemisorbed CO. This analysis showed that the number of active sites increased with decreasing Au particle size. This effect caused changes in the intensity of the FT-IR spectra of the adsorbed CO and in the reduction temperature of the catalysts.",

keywords = "Au particle size, CO adsorption, CeO crystallite size, PEMFC, PROX",

author = "Shin, {Whan Soo} and Jung, {Chang Ryul} and Jonghee Han and Nam, {Suk Woo} and Lim, {Tae Hoon} and Hong, {Seong Ahn} and Lee, {Ho In}",

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journal = "Journal of Industrial and Engineering Chemistry",

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T1 - Development of Au/CeCO2 catalysts for preferential oxidation of CO in PEMFC

AU - Shin, Whan Soo

AU - Jung, Chang Ryul

AU - Han, Jonghee

AU - Nam, Suk Woo

AU - Lim, Tae Hoon

AU - Hong, Seong Ahn

AU - Lee, Ho In

PY - 2004

Y1 - 2004

N2 - The preferential oxidation (PROX) of CO in an H2-rich stream was investigated over Au/MOx (M = Ti, Al, Fe, Ce) catalysts. It was found that 2.5 wt% Au/CeO2 showed the best activity for the reaction. Ceria itself had catalytic activity for the reaction and the activity increased with its decreasing crystallite size. In addition, the effect of Au particle size was investigated by means of XRD, TEM, TPR, and FT-IR spectroscopy of chemisorbed CO. This analysis showed that the number of active sites increased with decreasing Au particle size. This effect caused changes in the intensity of the FT-IR spectra of the adsorbed CO and in the reduction temperature of the catalysts.

AB - The preferential oxidation (PROX) of CO in an H2-rich stream was investigated over Au/MOx (M = Ti, Al, Fe, Ce) catalysts. It was found that 2.5 wt% Au/CeO2 showed the best activity for the reaction. Ceria itself had catalytic activity for the reaction and the activity increased with its decreasing crystallite size. In addition, the effect of Au particle size was investigated by means of XRD, TEM, TPR, and FT-IR spectroscopy of chemisorbed CO. This analysis showed that the number of active sites increased with decreasing Au particle size. This effect caused changes in the intensity of the FT-IR spectra of the adsorbed CO and in the reduction temperature of the catalysts.

KW - Au particle size

KW - CO adsorption

KW - CeO crystallite size

KW - PEMFC

KW - PROX

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JO - Journal of Industrial and Engineering Chemistry

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Development of Au/CeCO₂ catalysts for preferential oxidation of CO in PEMFC

Abstract

Keywords

ASJC Scopus subject areas

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