Title of article
In situ measurements under flow condition of the CO oxidation over supported gold nanoparticles
Author/Authors
M. Daté، نويسنده , , Francisco H. Imai، نويسنده , , S. Tsubota، نويسنده , , M. Haruta ، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
4
From page
222
To page
225
Abstract
In situ FT-IR measurements for Au/TiO2 and Au/Al2O3 have been carried out under the flow condition of CO oxidation at atmospheric pressure. It has been found that the Au particles remain neutral (Au0) in the presence of oxygen, while negatively charged particles (Auδ−) is formed in the absence of oxygen, as a result of the charge transfer from the oxygen vacancies. Moisture did not significantly affect the adsorption states of CO over Au/TiO2 and Au/Al2O3. Enhancement of the CO2 production by moisture was observed over Au/Al2O3, which is accompanied by the decomposition of carbonate-like species by moisture.
Keywords
Gold catalysts , Carbon monoxide oxidation , infrared spectroscopy , Oxide supports , in situ measurements
Journal title
CATALYSIS TODAY
Serial Year
2007
Journal title
CATALYSIS TODAY
Record number
1235677
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