Water-gas shift reaction on Cu and Au nanoparticles supported on CeO2 and ZnO: Intrinsic activity and importance of support interactions

Jose A. Rodriguez; Xianqin Wang; Ping Liu; Jonathan C. Hanson; Jan Hrbek

Water-gas shift reaction on Cu and Au nanoparticles supported on CeO₂ and ZnO: Intrinsic activity and importance of support interactions

Jose A. Rodriguez, Xianqin Wang, Ping Liu, Jonathan C. Hanson, Jan Hrbek

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Synchrotron-based techniques (high-resolution photoemission, in-situ X-ray absorption spectroscopy, and time-resolved X-ray diffraction) have been used to study the water-gas shift (WGS, CO + H2O → H2 + CO2) reaction on a series catalysts. Au and Cu nanoparticles supported on CeO2(111) display an extraordinary catalytic activity for the WGS reaction that is not seen on a ZnO(000i) support or for the bulk metal. The behaviour of Au/ceria in the WGS illustrates the essential role that an oxide can have for the activity of supported Au nanocatalysts. In-situ time-resolved x-ray diffraction and x-ray absorption spectroscopy were used to monitor the behavior of nanostructured {Au+AuOx}-CeO2 catalysts under the WGS reaction. At temperatures above 250 C, a complete AuOx→Au transformation was observed with high catalytic activity. The active sites in {Au + AuOx}/ceria catalysts involve pure gold nanoparticles in contact with O vacancies of the oxide support.

Original language	English (US)
Title of host publication	233rd ACS National Meeting, Abstracts of Scientific Papers
State	Published - 2007
Externally published	Yes
Event	233rd ACS National Meeting - Chicago, IL, United States Duration: Mar 25 2007 → Mar 29 2007

Publication series

Name	ACS National Meeting Book of Abstracts
ISSN (Print)	0065-7727

Other

Other	233rd ACS National Meeting
Country/Territory	United States
City	Chicago, IL
Period	3/25/07 → 3/29/07

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering

Cite this

@inproceedings{00c2b006413e4eefa6765ba149b9f67a,

title = "Water-gas shift reaction on Cu and Au nanoparticles supported on CeO2 and ZnO: Intrinsic activity and importance of support interactions",

abstract = "Synchrotron-based techniques (high-resolution photoemission, in-situ X-ray absorption spectroscopy, and time-resolved X-ray diffraction) have been used to study the water-gas shift (WGS, CO + H2O → H2 + CO2) reaction on a series catalysts. Au and Cu nanoparticles supported on CeO2(111) display an extraordinary catalytic activity for the WGS reaction that is not seen on a ZnO(000i) support or for the bulk metal. The behaviour of Au/ceria in the WGS illustrates the essential role that an oxide can have for the activity of supported Au nanocatalysts. In-situ time-resolved x-ray diffraction and x-ray absorption spectroscopy were used to monitor the behavior of nanostructured {Au+AuOx}-CeO2 catalysts under the WGS reaction. At temperatures above 250 C, a complete AuOx→Au transformation was observed with high catalytic activity. The active sites in {Au + AuOx}/ceria catalysts involve pure gold nanoparticles in contact with O vacancies of the oxide support.",

author = "Rodriguez, {Jose A.} and Xianqin Wang and Ping Liu and Hanson, {Jonathan C.} and Jan Hrbek",

year = "2007",

language = "English (US)",

isbn = "084127438X",

series = "ACS National Meeting Book of Abstracts",

booktitle = "233rd ACS National Meeting, Abstracts of Scientific Papers",

note = "233rd ACS National Meeting ; Conference date: 25-03-2007 Through 29-03-2007",

}

Water-gas shift reaction on Cu and Au nanoparticles supported on CeO₂ and ZnO: Intrinsic activity and importance of support interactions. / Rodriguez, Jose A.; Wang, Xianqin; Liu, Ping et al.
233rd ACS National Meeting, Abstracts of Scientific Papers. 2007. (ACS National Meeting Book of Abstracts).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Water-gas shift reaction on Cu and Au nanoparticles supported on CeO2 and ZnO

T2 - 233rd ACS National Meeting

AU - Rodriguez, Jose A.

AU - Wang, Xianqin

AU - Liu, Ping

AU - Hanson, Jonathan C.

AU - Hrbek, Jan

PY - 2007

Y1 - 2007

N2 - Synchrotron-based techniques (high-resolution photoemission, in-situ X-ray absorption spectroscopy, and time-resolved X-ray diffraction) have been used to study the water-gas shift (WGS, CO + H2O → H2 + CO2) reaction on a series catalysts. Au and Cu nanoparticles supported on CeO2(111) display an extraordinary catalytic activity for the WGS reaction that is not seen on a ZnO(000i) support or for the bulk metal. The behaviour of Au/ceria in the WGS illustrates the essential role that an oxide can have for the activity of supported Au nanocatalysts. In-situ time-resolved x-ray diffraction and x-ray absorption spectroscopy were used to monitor the behavior of nanostructured {Au+AuOx}-CeO2 catalysts under the WGS reaction. At temperatures above 250 C, a complete AuOx→Au transformation was observed with high catalytic activity. The active sites in {Au + AuOx}/ceria catalysts involve pure gold nanoparticles in contact with O vacancies of the oxide support.

AB - Synchrotron-based techniques (high-resolution photoemission, in-situ X-ray absorption spectroscopy, and time-resolved X-ray diffraction) have been used to study the water-gas shift (WGS, CO + H2O → H2 + CO2) reaction on a series catalysts. Au and Cu nanoparticles supported on CeO2(111) display an extraordinary catalytic activity for the WGS reaction that is not seen on a ZnO(000i) support or for the bulk metal. The behaviour of Au/ceria in the WGS illustrates the essential role that an oxide can have for the activity of supported Au nanocatalysts. In-situ time-resolved x-ray diffraction and x-ray absorption spectroscopy were used to monitor the behavior of nanostructured {Au+AuOx}-CeO2 catalysts under the WGS reaction. At temperatures above 250 C, a complete AuOx→Au transformation was observed with high catalytic activity. The active sites in {Au + AuOx}/ceria catalysts involve pure gold nanoparticles in contact with O vacancies of the oxide support.

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SN - 084127438X

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T3 - ACS National Meeting Book of Abstracts

BT - 233rd ACS National Meeting, Abstracts of Scientific Papers

Y2 - 25 March 2007 through 29 March 2007

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