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Design of nano-sized FeOx and Au/FeOx catalysts supported on CeO2 for total oxidation of VOC

Paper ID Volume ID Publish Year Pages File Format Full-Text
41497 45891 2011 9 PDF Available
Title
Design of nano-sized FeOx and Au/FeOx catalysts supported on CeO2 for total oxidation of VOC
Abstract

The total oxidation of methanol and toluene, chosen as representative VOCs, was investigated over CeO2-supported Au/FeOx catalysts prepared utilizing the bimetallic carbonyl cluster salt [NEt4][AuFe4(CO)16]. Characterization data showed that the catalysts prepared by the reported method exhibit highly and homogeneously dispersed iron oxide species on the ceria support together with small gold nanoparticles, whose size increases on increasing the amount of gold/iron. Addition of iron oxide species did not substantially increase the methanol combustion activity of ceria, whereas the presence of the mixed gold and FeOx species has been found to strongly enhance the activity towards the total oxidation of methanol. In the case of the toluene combustion the addition of FeOx or FeOx/Au species caused a significant decrease in the activity of the bare CeO2. The above catalytic behavior was rationalized on the basis of different interactions occurring among gold, iron oxide and cerium oxide, which synergically affects both the reactivity of the surface oxygen and the capacity of the support to adsorb the organic reactant.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (204 K)Download as PowerPoint slideResearch highlights► Preparation of iron and gold/iron CeO2 supported catalysts using metallic carbonyl clusters. ► Strong interaction between Au and oxide species, both of Fe and ceria, was achieved. ► The enhanced oxygen mobility favors methanol catalytic combustion.

Keywords
Catalytic combustion; Gold/iron-oxide catalysts; Cluster-derived catalysts
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Design of nano-sized FeOx and Au/FeOx catalysts supported on CeO2 for total oxidation of VOC
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 395, Issues 1–2, 15 March 2011, Pages 10–18
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