Liquid-phase catalytic oxidation of toluene ozone-air mixture
DOI:
https://doi.org/10.15587/1729-4061.2012.5571Keywords:
Oxidation, ozone, toluene, catalystAbstract
The article presents the results of the study of kinetic patterns of the reaction of ozone with toluene in acetic anhydride. It was shown that an effective method of control of the depth of ozone oxidation of toluene at the methyl group is carrying out the reaction in a solution of acetic anhydride with sulfuric acid, where the labile intermediates in the moment of formation turn into the forms resistant to ozone - benzyl acetate and benzylidene diacetate. The use of manganese-bromide catalyst increases the rate and depth of oxidation of toluene: the main products of the reaction are benzaldehyde (72.5% in acylated and 10% in non acylated forms and 7.5% of benzyl acetate. It was determined that the implication of toluene to the oxidation at the methyl group passes according to the reaction with the oxidized form of the metal, which is formed in result of the reaction with ozone. A scheme for catalysis was suggested in the article. In these conditions, the oxidation is carried out by molecular oxygen, and ozone acts as an initiator of oxidation. The kinetics of the main stages of the catalytic cycle was studied, the mechanism of oxidation-reduction catalysis, which conforms to the experimental data obtained was suggested
References
- Галстян С.Г. Кінетика окиснення толуолу озоноповітряною сумішшю в оцтовому ангідриді / С.Г. Галстян, Н.Ф. Тюпало, А.Г. Галстян [Текст] // Український хімічний журнал. – 2010. – Т.76, №4. – С. 26-30.
- Захаров И.В. Кобальтбромидный катализ окисления органических соединений / И.В.Захаров, Ю.В.Галетий, В.А. Адамян [Текст] // Кинетика и катализ.– 1988.– Т.29, № 5.– С.1072–1077.
- Дигуров Н.Г. Математическая модель процесса жидкофазного окисления толуола и этилбензола с кобальтбромидным катализатором / Н.Г.Дигуров, Т.В. Бухаркина, Н.А. Батыгина [Текст] // Кинетика и катализ. - 1980. -Т.21, №3.-С.661-664.
- Бушуев А.С. Кобальтбромидный катализ реакции окисления 3-ацетаминотолуола озоном в уксусной кислоте / А.С. Бушуев, А.А. Седых, А.Г.Галстян, И.А. Зема [Текст] // Восточно-Европейский журнал передовых технологий. – 2011. – Т.53, №5/6. – С. 51-54.
- Накамура А., Цуцуи М. Принципы и применение гомогенного катализатора. - М.: Мир, 1963. - 232с.
- Heiba E.I. Oxidation by metal salts / E.I.Heiba, R.M.Dessau, W.J.Koehl // J. Amer. Chem. Soc. – 1969. – V.91, №1. – Р. 138-145.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2014 Андрій Генрійович Галстян
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
