Issue 5, 2014

Investigation of the elimination of VOC mixtures over a Pd-loaded V-doped TiO2 support

Abstract

The removal of a butanone–toluene mixture over Pd/5%V-TiO2 and Pd/TiO2 catalysts has been investigated. The V-doped sample showed a higher performance in the oxidation of butanone and also a butanone–toluene mixture, which was attributed to competition between oxygen species and VOCs on vanadium adsorption sites. However in the presence of both VOCs, Pd/5%V-TiO2 showed a higher performance than in the elimination of butanone alone. An operando DRIFT experiment coupled with a mass spectrometer revealed that both VOCs compete in terms of adsorption on the surface of the catalyst. However, toluene adsorption is decreased by MEK, meaning that the latter oxidizes more easily into its by-products, whose combustion causes variations in the surface temperature of the catalyst, thus enhancing the oxidation of toluene molecules present in the gaseous stream.

Graphical abstract: Investigation of the elimination of VOC mixtures over a Pd-loaded V-doped TiO2 support

Article information

Article type
Paper
Submitted
01 Oct 2013
Accepted
13 Dec 2013
First published
16 Dec 2013

New J. Chem., 2014,38, 2066-2074

Author version available

Investigation of the elimination of VOC mixtures over a Pd-loaded V-doped TiO2 support

T. Barakat, J. C. Rooke, R. Cousin, J.-F. Lamonier, J.-M. Giraudon, B.-L. Su and S. Siffert, New J. Chem., 2014, 38, 2066 DOI: 10.1039/C3NJ01190A

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