Collect. Czech. Chem. Commun.
1997, 62, 1481-1490
https://doi.org/10.1135/cccc19971481
Oxidation of Alkylaromatic Hydrocarbons Over V2O5-Sb2O3/TiO2 Catalyst
Marcel Antol, Zuzana Cvengrošováa, Imrich Vrábelb, Ján Leškoc and Milan Hroneca
a Department of Organic Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
b Department of Physical Chemistry, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
c Central Laboratory, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
Abstract
Monoalkylbenzenes, polymethylbenzenes, para-substituted toluenes and monomethylnaphthalenes were oxidized in the vapor phase by oxygen-containing gas in the presence of water over a Sb2O3-promoted V2O5/TiO2 catalyst. This type of catalyst yields carboxylic acids with high selectivity. In the oxidation of substituted alkylbenzenes only alkyl groups were oxidized. No products of oxidative dimerization were detected. Only in the oxidation of methylnaphthalenes, also products of aromatic ring oxidation are formed. A correlation between experimental data and results of quantum-chemical calculations of bond dissociation energies is discussed.
Keywords: Oxidation; Alkylaromatics; Carboxylic acids; V2O5.
