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In situ DRIFTS study on the catalytic oxidation of toluene over V2O5/TiO2 under mild conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
51721 46851 2011 5 PDF Available
Title
In situ DRIFTS study on the catalytic oxidation of toluene over V2O5/TiO2 under mild conditions
Abstract

In situ DRIFTS study of toluene oxidation over V–Ti–O catalyst at ambient temperature was presented. Physisorbed benzaldehyde, benzoic acid, benzoate, vanadyl species and carbon dioxide were detected. An analysis of the vanadyl species band and XPS characterization were used to illustrate the reaction route. A reaction mechanism is proposed: monomeric VOx is firstly reduced by the adsorbed species, then oxygen transfers from bulk V2O5 to monomeric VOx for compensation, and the oxygen-deficient bulk V2O5 replenishes oxygen from gas phase. The transference of oxygen from bulk V2O5 to reduced VOx is deemed as the rate determining step below 90 °C.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A negative band corresponds to the reduction of vanadyl species over V–Ti–O catalyst. ► Oxygen transfers from gas to bulk V2O5, then to monomeric VOx for toluene oxidation. ► The transfer of oxygen from bulk V2O5 to reduced VOx is determining step below 90 °C.

Keywords
In situ DRIFTS; V–Ti–O catalyst; Toluene; Oxygen transfer
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In situ DRIFTS study on the catalytic oxidation of toluene over V2O5/TiO2 under mild conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 14, Issue 1, 25 October 2011, Pages 77–81
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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