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Selective CO oxidation over promoted Au/γ-Al2O3 catalysts in the presence of CO2 and H2O in the feed

Paper ID Volume ID Publish Year Pages File Format Full-Text
52206 46866 2011 4 PDF Available
Title
Selective CO oxidation over promoted Au/γ-Al2O3 catalysts in the presence of CO2 and H2O in the feed
Abstract

In this work, the effect of promoter type (Mg, Mn, Ce, Co, Fe and Ni) on selective CO oxidation performance of Au/γ-Al2O3 was studied with the realistic feed stream containing CO2 and H2O. The effects of Au loading, promoter loading, reaction temperature and the feed composition were also investigated. It was found that MgO was the best promoter in the presence of CO2 and H2O, and 1.25 wt.% Mg was sufficient for promotion. The CO conversion decreased with the addition of CO2 while the presence of H2O had some positive effects.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights►Decrease of temperature (150–50 °C) increased conversion in absence of H2O & CO2 ►Mg and Mn promoted Au better than Fe, Ni, Co and Ce in presence of H2O & CO2 ►Activity increased with increasing Mg first, and then decreased at higher Mg % ►Effect of CO2 was negative while H2O positively affected CO conversion

Keywords
Selective CO oxidation; Promoted Au catalysts; Au/γ-Al2O3; Fuel cell; Fuel processor
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Selective CO oxidation over promoted Au/γ-Al2O3 catalysts in the presence of CO2 and H2O in the feed
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 12, 1 July 2011, Pages 1149–1152
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us