Investigation of the effect of the preparation method on the activity and stability of Au/CeZrO 4 catalysts for the low temperature water gas shift reaction

R. Pilasombat; H. Daly; A. Goguet; J. P. Breen; R. Burch; C. Hardacre; D. Thompsett

doi:10.1016/j.cattod.2011.04.053

Investigation of the effect of the preparation method on the activity and stability of Au/CeZrO 4 catalysts for the low temperature water gas shift reaction

R. Pilasombat, H. Daly, A. Goguet, J. P. Breen, R. Burch, C. Hardacre^*, D. Thompsett

^*Corresponding author for this work

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

Abstract

The impact of the preparation method on the activity and stability of gold supported on ceria-zirconia low temperature water-gas shift (WGS) catalysts have been investigated. The influence of the gold deposition method, nature of the gold precursor, nature of the washing solution, drying method, Ce:Zr ratio of the support and sulfation of the support have been evaluated. The highest activity catalysts were obtained using a support with a Ce:Zr mole ratio 1:1, HAuCl ₄ as the gold precursor deposited via deposition precipitation using sodium carbonate as the precipitation agent and the catalyst washed with water or 0.1 M NH ₄OH solution. In addition, the drying used was found to be critical with drying under vacuum at room temperature found to be most effective. DRIFT spectra of CO adsorbed at room temperature over the range of catalysts synthesized showed that the Au-CO band area (major species: metallic gold) varied with preparation method and could be correlated with the observed activity of the catalysts under the WGS feed.

Original language	English
Pages (from-to)	131-138
Number of pages	8
Journal	Catalysis Today
Volume	180
Issue number	1
DOIs	https://doi.org/10.1016/j.cattod.2011.04.053
Publication status	Published - 17 Jan 2012

Keywords

Gold
Preparation
Stability
Water gas shift

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10.1016/j.cattod.2011.04.053

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title = "Investigation of the effect of the preparation method on the activity and stability of Au/CeZrO 4 catalysts for the low temperature water gas shift reaction",

abstract = "The impact of the preparation method on the activity and stability of gold supported on ceria-zirconia low temperature water-gas shift (WGS) catalysts have been investigated. The influence of the gold deposition method, nature of the gold precursor, nature of the washing solution, drying method, Ce:Zr ratio of the support and sulfation of the support have been evaluated. The highest activity catalysts were obtained using a support with a Ce:Zr mole ratio 1:1, HAuCl 4 as the gold precursor deposited via deposition precipitation using sodium carbonate as the precipitation agent and the catalyst washed with water or 0.1 M NH 4OH solution. In addition, the drying used was found to be critical with drying under vacuum at room temperature found to be most effective. DRIFT spectra of CO adsorbed at room temperature over the range of catalysts synthesized showed that the Au-CO band area (major species: metallic gold) varied with preparation method and could be correlated with the observed activity of the catalysts under the WGS feed.",

keywords = "Gold, Preparation, Stability, Water gas shift",

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doi = "10.1016/j.cattod.2011.04.053",

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AU - Pilasombat, R.

AU - Daly, H.

AU - Goguet, A.

AU - Breen, J. P.

AU - Burch, R.

AU - Hardacre, C.

AU - Thompsett, D.

PY - 2012/1/17

Y1 - 2012/1/17

N2 - The impact of the preparation method on the activity and stability of gold supported on ceria-zirconia low temperature water-gas shift (WGS) catalysts have been investigated. The influence of the gold deposition method, nature of the gold precursor, nature of the washing solution, drying method, Ce:Zr ratio of the support and sulfation of the support have been evaluated. The highest activity catalysts were obtained using a support with a Ce:Zr mole ratio 1:1, HAuCl 4 as the gold precursor deposited via deposition precipitation using sodium carbonate as the precipitation agent and the catalyst washed with water or 0.1 M NH 4OH solution. In addition, the drying used was found to be critical with drying under vacuum at room temperature found to be most effective. DRIFT spectra of CO adsorbed at room temperature over the range of catalysts synthesized showed that the Au-CO band area (major species: metallic gold) varied with preparation method and could be correlated with the observed activity of the catalysts under the WGS feed.

AB - The impact of the preparation method on the activity and stability of gold supported on ceria-zirconia low temperature water-gas shift (WGS) catalysts have been investigated. The influence of the gold deposition method, nature of the gold precursor, nature of the washing solution, drying method, Ce:Zr ratio of the support and sulfation of the support have been evaluated. The highest activity catalysts were obtained using a support with a Ce:Zr mole ratio 1:1, HAuCl 4 as the gold precursor deposited via deposition precipitation using sodium carbonate as the precipitation agent and the catalyst washed with water or 0.1 M NH 4OH solution. In addition, the drying used was found to be critical with drying under vacuum at room temperature found to be most effective. DRIFT spectra of CO adsorbed at room temperature over the range of catalysts synthesized showed that the Au-CO band area (major species: metallic gold) varied with preparation method and could be correlated with the observed activity of the catalysts under the WGS feed.

KW - Gold

KW - Preparation

KW - Stability

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JO - Catalysis Today

JF - Catalysis Today

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ER -

Investigation of the effect of the preparation method on the activity and stability of Au/CeZrO 4 catalysts for the low temperature water gas shift reaction

Abstract

Keywords

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