Deposition of gold particles on mesoporous catalyst supports by sonochemical method, and their catalytic performance for CO oxidation

Nina Perkas; Ziyi Zhong; Judit Grinblat; Aharon Gedanken

doi:10.1007/s10562-007-9257-8

Deposition of gold particles on mesoporous catalyst supports by sonochemical method, and their catalytic performance for CO oxidation

Nina Perkas
, Ziyi Zhong
, Judit Grinblat
, Aharon Gedanken

Department of Chemistry

Agency for Science, Technology and Research, Singapore

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

42 Scopus citations

Abstract

Supported gold catalysts on the mesoporous (MSP) metal oxides were prepared by a one-step, ultrasound-assisted reduction method, and characterized by XRD, HRTEM, EDX, BET, and XPS analysis. Their catalytic activities were examined in the oxidation of CO. Compared to the Au/Fe₂O₃(MSP) catalyst, the Au/TiO₂(MSP) and Au/Fe₂O₃- TiO₂(MSP) catalysts exhibited higher catalytic activity in the oxidation of CO at low temperatures. The high catalytic activity of Au/TiO ₂(MSP) was attributed to the metallic state of the gold nanoparticles, their small size (2-2.5 nm), and their high dispersion on the catalyst support.

Original language	English
Pages (from-to)	19-24
Number of pages	6
Journal	Catalysis Letters
Volume	120
Issue number	1-2
DOIs	https://doi.org/10.1007/s10562-007-9257-8
State	Published - Jan 2008

Keywords

CO oxidation
Gold
Mesoporous support
Sonochemical reduction

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abstract = "Supported gold catalysts on the mesoporous (MSP) metal oxides were prepared by a one-step, ultrasound-assisted reduction method, and characterized by XRD, HRTEM, EDX, BET, and XPS analysis. Their catalytic activities were examined in the oxidation of CO. Compared to the Au/Fe2O3(MSP) catalyst, the Au/TiO2(MSP) and Au/Fe2O3- TiO2(MSP) catalysts exhibited higher catalytic activity in the oxidation of CO at low temperatures. The high catalytic activity of Au/TiO 2(MSP) was attributed to the metallic state of the gold nanoparticles, their small size (2-2.5 nm), and their high dispersion on the catalyst support.",

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AU - Perkas, Nina

AU - Zhong, Ziyi

AU - Grinblat, Judit

AU - Gedanken, Aharon

PY - 2008/1

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N2 - Supported gold catalysts on the mesoporous (MSP) metal oxides were prepared by a one-step, ultrasound-assisted reduction method, and characterized by XRD, HRTEM, EDX, BET, and XPS analysis. Their catalytic activities were examined in the oxidation of CO. Compared to the Au/Fe2O3(MSP) catalyst, the Au/TiO2(MSP) and Au/Fe2O3- TiO2(MSP) catalysts exhibited higher catalytic activity in the oxidation of CO at low temperatures. The high catalytic activity of Au/TiO 2(MSP) was attributed to the metallic state of the gold nanoparticles, their small size (2-2.5 nm), and their high dispersion on the catalyst support.

AB - Supported gold catalysts on the mesoporous (MSP) metal oxides were prepared by a one-step, ultrasound-assisted reduction method, and characterized by XRD, HRTEM, EDX, BET, and XPS analysis. Their catalytic activities were examined in the oxidation of CO. Compared to the Au/Fe2O3(MSP) catalyst, the Au/TiO2(MSP) and Au/Fe2O3- TiO2(MSP) catalysts exhibited higher catalytic activity in the oxidation of CO at low temperatures. The high catalytic activity of Au/TiO 2(MSP) was attributed to the metallic state of the gold nanoparticles, their small size (2-2.5 nm), and their high dispersion on the catalyst support.

KW - CO oxidation

KW - Gold

KW - Mesoporous support

KW - Sonochemical reduction

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Deposition of gold particles on mesoporous catalyst supports by sonochemical method, and their catalytic performance for CO oxidation

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Keywords

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