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Issue 5, 2014
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Investigation of the elimination of VOC mixtures over a Pd-loaded V-doped TiO2 support

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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

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Publication details

The article was received on 01 Oct 2013, accepted on 13 Dec 2013 and first published on 16 Dec 2013


Article type: Paper
DOI: 10.1039/C3NJ01190A
Author version available: Download Author version (PDF)
Citation: New J. Chem., 2014,38, 2066-2074
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    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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