THIAMINE IMPACT ON THE RATES OF H$_2$O$_2$ DECOMPOSITION IN AQUEOUS SOLUTION AND CUMENE INITIATED AUTOOXIDATION IN EMULSIONS

Authors

  • N.M. Beylerian Chair of Physical and Colloids Chemistry, YSU, Armenia
  • P.G. Minasyan Chair of Physical and Colloids Chemistry, YSU, Armenia
  • E.R. Saroukhanyan Chair of Physical and Colloids Chemistry, YSU, Armenia
  • M.Z. Asatryan Chair of Physical and Colloids Chemistry, YSU, Armenia

DOI:

https://doi.org/10.46991/PYSU:B/2012.46.3.008

Keywords:

thiamine , radical-chain mechanism, cumine autooxidation, rate of H$_2$O$_2$ decomposition

Abstract

It is shown that in alkaline medium thiamine (TA) results in H2O2 decomposition rate decrease, but in acidic medium inhibits H2O2 decomposition catalyzed by Fe(II) cations, which occurs mainly by radical-chain mechanism. In our early works it was established that in alkaline medium ap­proximately 16% of H2O2 is being decayed with radical formation. So, TA mainly acts in alkaline medium on the rate of H2O2 decomposition, which occurs by radical mechanism. TA·HCl also inhibits the cumene initiated auto­oxi­da­tion, which occurs by radical-chain mecha­nism with degenerated bran­ching. During autooxidation R• and ROO• free radicals are formed. It is assumed that TA, as well TA·HCl effectively react with free radicals R• and ROO•.

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Published

2012-10-01

How to Cite

Beylerian, N.M., P.G. Minasyan, E.R. Saroukhanyan, and M.Z. Asatryan. 2012. “THIAMINE IMPACT ON THE RATES OF H$_2$O$_2$ DECOMPOSITION IN AQUEOUS SOLUTION AND CUMENE INITIATED AUTOOXIDATION IN EMULSIONS”. Proceedings of the YSU B: Chemical and Biological Sciences 46 (3 (229):8-12. https://doi.org/10.46991/PYSU:B/2012.46.3.008.

Issue

Vol. 46 No. 3 (229) (2012)

Section

Chemistry

License

Copyright (c) 2012 Proceedings of the YSU

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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