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- Title
Kinetics and Mechanism of 4-Nitrotoluene Oxidation with Ozone in an Acetic Acid Solution in the Presence of a Metal–Bromide Catalyst.
- Authors
Galstyan, A. G.; Tyupalo, N. F.; Andreev, P. Yu.
- Abstract
The kinetics and mechanism of a reaction between ozone and 4-nitrotoluene in an acetic acid solution in the presence of a cobalt–bromide catalyst were studied at 100°С. Under these conditions, 4-nitrobenzoic acid was the main reaction product (96.6%). The rate of oxidation exhibited a first order with respect to the substrate, ozone, and the catalyst and a zero order with respect to oxygen. The main stages of the catalytic cycle were considered. It is believed that the selective oxidation of 4-nitrotoluene at the methyl group in the presence of a catalyst occurs as a nonchain ion–radical process, in which the role of ozone is reduced to the generation of an active catalyst species (Co3+Br– ↔ Co2+Br). This species involves 4-nitrotoluene in the oxidation process at a high rate.
- Subjects
DYNAMICS; ORGANONITROGEN compounds; TRANSITION metals; METHYL groups; PHYSICAL &; theoretical chemistry; CATALYSIS
- Publication
Kinetics & Catalysis, 2003, Vol 44, Issue 1, p82
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1023/A:1022572701950