Infrared study of the selective oxidation of toluene and o-xylene on vanadium oxide/TiO2

Hengstum van, A.J. and Pranger, J. and Hengstum-Nijhuis, S.M. and Ommen van, J.G. and Gellings, P.J. (1986) Infrared study of the selective oxidation of toluene and o-xylene on vanadium oxide/TiO2. Journal of Catalysis, 101 (2). pp. 323-330. ISSN 0021-9517

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Abstract:	Infrared spectroscopy was used to obtain information on the mechanism of the selective oxidation of toluene and o-xylene over vanadium oxide catalysts. The interaction of these aromatic hydrocarbons and the products benzaldehyde and o-tolualdehyde with the surface of a V2O5/TiO2 monolayer catalyst was investigated at different temperatures under conditions comparable to those of the catalytic reaction. The infrared results obtained for each of these compounds showed a great resemblance, indicating that their oxidation proceeds along the same reaction path. Coordinatively adsorbed aldehydes, carboxylate-like structures, and benzoate species could be identified as intermediates on the surface of the catalysts. On the basis of the spectroscopic observations a possible reaction mechanism has been proposed.
Item Type:	Article
Copyright:	© 1986 Elsevier Science
Link to this item:	http://purl.utwente.nl/publications/69717
Official URL:	http://dx.doi.org/10.1016/0021-9517(86)90259-9
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