Supported Au catalysts for low temperature CO oxidation

H. H. Kung; M. C. Kung; C. K. Costello

doi:10.1016/S0021-9517(02)00111-2

Supported Au catalysts for low temperature CO oxidation

H. H. Kung^*, M. C. Kung, C. K. Costello

^*Corresponding author for this work

Chemical and Biological Engineering

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

449 Scopus citations

Abstract

Supported Au catalysts are very active for low temperature CO oxidation. However, the reported activity from different laboratories for apparently similar catalysts can differ quite substantially. Recent progress in resolving this difficulty is summarized. Residual chloride in the sample is a very effective poison of the active site. The effect of water vapor on the catalytic activity differs depending on the support and the residual chloride content. A model of the active site, which consists of an ensemble of metallic Au atoms and Au cations with hydroxyl ligands, the reaction mechanism for CO oxidation, and the mechanism for deactivation during reaction as well as regeneration are discussed with respect to the available data.

Original language	English (US)
Pages (from-to)	425-432
Number of pages	8
Journal	Journal of Catalysis
Volume	216
Issue number	1-2
DOIs	https://doi.org/10.1016/S0021-9517(02)00111-2
State	Published - 2003

Funding

This research was supported by the EMSI program of the NSF and Department of Energy Office of Science (CHE-9810378) at Northwestern University Institute of Environmental Catalysis.

Keywords

Active site
CO
Catalyst
Gold
Mechanism
Oxidation

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

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10.1016/S0021-9517(02)00111-2

Cite this

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title = "Supported Au catalysts for low temperature CO oxidation",

abstract = "Supported Au catalysts are very active for low temperature CO oxidation. However, the reported activity from different laboratories for apparently similar catalysts can differ quite substantially. Recent progress in resolving this difficulty is summarized. Residual chloride in the sample is a very effective poison of the active site. The effect of water vapor on the catalytic activity differs depending on the support and the residual chloride content. A model of the active site, which consists of an ensemble of metallic Au atoms and Au cations with hydroxyl ligands, the reaction mechanism for CO oxidation, and the mechanism for deactivation during reaction as well as regeneration are discussed with respect to the available data.",

keywords = "Active site, CO, Catalyst, Gold, Mechanism, Oxidation",

author = "Kung, {H. H.} and Kung, {M. C.} and Costello, {C. K.}",

note = "Funding Information: This research was supported by the EMSI program of the NSF and Department of Energy Office of Science (CHE-9810378) at Northwestern University Institute of Environmental Catalysis. ",

year = "2003",

doi = "10.1016/S0021-9517(02)00111-2",

language = "English (US)",

volume = "216",

pages = "425--432",

journal = "Journal of Catalysis",

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T1 - Supported Au catalysts for low temperature CO oxidation

AU - Kung, H. H.

AU - Kung, M. C.

AU - Costello, C. K.

N1 - Funding Information: This research was supported by the EMSI program of the NSF and Department of Energy Office of Science (CHE-9810378) at Northwestern University Institute of Environmental Catalysis.

PY - 2003

Y1 - 2003

N2 - Supported Au catalysts are very active for low temperature CO oxidation. However, the reported activity from different laboratories for apparently similar catalysts can differ quite substantially. Recent progress in resolving this difficulty is summarized. Residual chloride in the sample is a very effective poison of the active site. The effect of water vapor on the catalytic activity differs depending on the support and the residual chloride content. A model of the active site, which consists of an ensemble of metallic Au atoms and Au cations with hydroxyl ligands, the reaction mechanism for CO oxidation, and the mechanism for deactivation during reaction as well as regeneration are discussed with respect to the available data.

AB - Supported Au catalysts are very active for low temperature CO oxidation. However, the reported activity from different laboratories for apparently similar catalysts can differ quite substantially. Recent progress in resolving this difficulty is summarized. Residual chloride in the sample is a very effective poison of the active site. The effect of water vapor on the catalytic activity differs depending on the support and the residual chloride content. A model of the active site, which consists of an ensemble of metallic Au atoms and Au cations with hydroxyl ligands, the reaction mechanism for CO oxidation, and the mechanism for deactivation during reaction as well as regeneration are discussed with respect to the available data.

KW - Active site

KW - CO

KW - Catalyst

KW - Gold

KW - Mechanism

KW - Oxidation

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DO - 10.1016/S0021-9517(02)00111-2

M3 - Article

AN - SCOPUS:0038344682

SN - 0021-9517

VL - 216

SP - 425

EP - 432

JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 1-2

ER -

Supported Au catalysts for low temperature CO oxidation

Abstract

Funding

Keywords

ASJC Scopus subject areas

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