DIMETHYLSULFOXIDE INFLUENCE ON THE RATE OF HYDROGEN PEROXIDE DECOMPOSITION IN ALKALINE MEDIUM

Authors

  • N. M. Beylerian Faculty of Chemistry, YSU, Armenia
  • M. Z. Asaturyan Faculty of Chemistry, YSU, Armenia

DOI:

https://doi.org/10.46991/PYSU:B/2009.43.1.009

Keywords:

DMSO, peroxide, reaction rate, nonradical mechanism, gasometric method

Abstract

The cited reaction has been studied at 298 K by gasometric method. At     0.5 ⋅10-2$\leq$[DMSO]0 $\leq$4 ⋅10-2 M the reaction rate (RO2) is being increased approximately by 16%. It is established by ESR method that TEMPO is not being expended and does not influence on the RO2. In DMSO presence the reaction activation energy is less by 5.4 kJ/mol. It is assumed that H2O2 molecule interacts with the polar O$^{\delta −}\leftarrow$ S (CH3)2$^{\delta +}$  bond of DMSO molecule, which results in activation of H2O2 molecule. It reacts with enhanced rate HOO– anion by nonradical mechanism. A mechanism is proposed and discussed.

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Published

2009-02-04

How to Cite

Beylerian, N. M., and M. Z. Asaturyan. 2009. “DIMETHYLSULFOXIDE INFLUENCE ON THE RATE OF HYDROGEN PEROXIDE DECOMPOSITION IN ALKALINE MEDIUM”. Proceedings of the YSU B: Chemical and Biological Sciences 43 (1 (218):9-14. https://doi.org/10.46991/PYSU:B/2009.43.1.009.

Issue

Vol. 43 No. 1 (218) (2009)

Section

Chemistry

License

Copyright (c) 2009 Proceedings of the YSU

Creative Commons License

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

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