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Structural changes during toluene complete oxidation on supported EuFeO3 monitored by in situ 151Eu and 57Fe Mössbauer spectroscopy

Paper ID Volume ID Publish Year Pages File Format Full-Text
54843 47028 2013 4 PDF Available
Title
Structural changes during toluene complete oxidation on supported EuFeO3 monitored by in situ 151Eu and 57Fe Mössbauer spectroscopy
Abstract

Pure EuFeO3 and ceria were prepared via a sol–gel citrate route and were calcined at 700 °C. Separately, a 20 wt% EuFeO3/CeO2 was prepared via incipient wetness impregnation of calcined ceria with citrate precursors and calcined in the same conditions. SBET, XRD, toluene chemisorption, toluene–TPD and in situ 151Eu and 57Fe Mössbauer investigations were performed. All characterization data indicate the formation of a well-dispersed EuFeO3 at the surface of CeO2. During the oxidation of toluene 151Eu and 57Fe Mössbauer spectroscopy suggested a cooperative effect of the cations. The catalysts were tested in total oxidation of toluene. In terms of intrinsic activity for toluene combustion, supported catalysts were more active than bulk EuFeO3. All structural changes during operation time were reversible.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (107 K)Download as PowerPoint slideHighlights► Catalytic total oxidation of toluene was realized on supported perovskite. ► 151Eu and 57Fe Mössbauer spectroscopy suggested a cooperative effect of the cations. ► The deposition of EuFeO3 on ceria led to the increase of the surface area.

Keywords
Supported perovskite; Ceria support; 151Eu and 57Fe Mössbauer spectroscopy; Toluene combustion
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Structural changes during toluene complete oxidation on supported EuFeO3 monitored by in situ 151Eu and 57Fe Mössbauer spectroscopy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 208, 1 June 2013, Pages 56–59
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