CO oxidation over a fine porous gold catalyst fabricated by selective leaching from an ordered AuCu3 intermetallic compound

Satoshi Kameoka; An Pang Tsai

doi:10.1007/s10562-007-9344-x

CO oxidation over a fine porous gold catalyst fabricated by selective leaching from an ordered AuCu₃ intermetallic compound

Satoshi Kameoka, An Pang Tsai

Center for Exploration of New Inorganic Materials

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

66 Citations (Scopus)

Abstract

A fine porous gold catalyst has been fabricated by selective leaching of Cu from an ordered AuCu₃ intermetallic compound with 50%HNO₃ aqueous solution at 50 °C. This catalyst exhibited comparable areal rate (mol min^-1 m^-2-cat) with the Au/TiO₂ catalyst for CO oxidation. The present study demonstrates that high catalytic activity of gold is originated neither from the presence of fine dispersed Au particles nor from Au-support perimeter interface.

Original language	English
Pages (from-to)	337-341
Number of pages	5
Journal	Catalysis Letters
Volume	121
Issue number	3-4
DOIs	https://doi.org/10.1007/s10562-007-9344-x
Publication status	Published - 2008 Mar 1

Keywords

CO oxidation
Intermetallic compound
Leaching
Ordered AuCu
Porous gold

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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AU - Tsai, An Pang

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N2 - A fine porous gold catalyst has been fabricated by selective leaching of Cu from an ordered AuCu3 intermetallic compound with 50%HNO3 aqueous solution at 50 °C. This catalyst exhibited comparable areal rate (mol min-1 m-2-cat) with the Au/TiO2 catalyst for CO oxidation. The present study demonstrates that high catalytic activity of gold is originated neither from the presence of fine dispersed Au particles nor from Au-support perimeter interface.

AB - A fine porous gold catalyst has been fabricated by selective leaching of Cu from an ordered AuCu3 intermetallic compound with 50%HNO3 aqueous solution at 50 °C. This catalyst exhibited comparable areal rate (mol min-1 m-2-cat) with the Au/TiO2 catalyst for CO oxidation. The present study demonstrates that high catalytic activity of gold is originated neither from the presence of fine dispersed Au particles nor from Au-support perimeter interface.

KW - CO oxidation

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KW - Leaching

KW - Ordered AuCu

KW - Porous gold

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