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Cooperative effect of Ce and Pr in the catalytic combustion of ethanol in mixed Cu/CoMgAl oxides obtained from hydrotalcites

Paper ID Volume ID Publish Year Pages File Format Full-Text
41203 45880 2011 9 PDF Available
Title
Cooperative effect of Ce and Pr in the catalytic combustion of ethanol in mixed Cu/CoMgAl oxides obtained from hydrotalcites
Abstract

The cooperative effect of Ce and Pr in the modification of mixed copper and cobalt oxide catalysts which were synthesized starting from the co-precipitation method of a hydrotalcite structure was evaluated in the catalytic combustion of ethanol. The solids were characterized by XRD, XRF, H2–TPR, O2–TPD and N2 adsorption. The greatest catalytic performance was associated with the increase in the oxygen storage capacity and reducibility in the solids that contain rare earth elements (Ce–Pr) and with the improvement in the specific surface area. Additionally, the high selectivity towards CO2, which is the principal product in total oxidation, demonstrates that the solids modified with Cu and/or Co and promoted with rare earth elements, are excellent catalysts in the total oxidation of ethanol, evidencing a cooperative effect among the metals.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (215 K)Download as PowerPoint slideHighlights► The enhanced catalytic activity has been explained in terms of the high surface area, reducibility and oxygen adsorption. ► The mixture of cobalt and copper in a 1:1 ratio leads to more active materials, showing a cooperative effect. ► The presence of Ce alone or combined with Pr, on the surface of the catalysts, notably favours the total oxidation of ethanol.

Keywords
Cooperative effect; Hydrotalcite; Mixed oxide; Ethanol oxidation; VOCs
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Cooperative effect of Ce and Pr in the catalytic combustion of ethanol in mixed Cu/CoMgAl oxides obtained from hydrotalcites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 408, Issues 1–2, 28 November 2011, Pages 96–104
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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
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Any Questions? feel free to contact us