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Relationship between structural properties and activity in complete benzene oxidation over Au/CeO2–CoOx catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
55378 47050 2012 9 PDF Available
Title
Relationship between structural properties and activity in complete benzene oxidation over Au/CeO2–CoOx catalysts
Abstract

Au/CeO2–CoOx catalysts were synthesized using two methods for the mixed support preparation: co-precipitation (CP) or mechanochemical activation (MA). The catalysts were characterized by means of XRD, HRTEM, XPS, Raman spectroscopy and TPR measurements. It was established that the catalyst prepared by MA exhibited much higher activity in the reaction of complete benzene oxidation (CBO) than that prepared using CP. The reason of this different catalytic behavior was search in the differences in the structure and properties of the support depending on the preparation method. In the case of MA mode, the existence of Co-phase with enhanced redox properties influenced both of gold and modified ceria in close vicinity could be responsible for the observed high catalytic activity at relatively low temperatures in the reaction of CBO.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (124 K)Download as PowerPoint slideHighlights► Au catalysts on CoOx doped ceria synthesized by co-precipitation or mechanochemistry. ► Different structures of the mixed oxides supports caused by the preparation method. ► Relationship between structure, reduction behavior and catalytic performance in CBO.

Keywords
Gold catalysts; Ceria doped with CoOx; Complete benzene oxidation
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Relationship between structural properties and activity in complete benzene oxidation over Au/CeO2–CoOx catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 187, Issue 1, 30 June 2012, Pages 30–38
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
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