Plasmachemical and heterogeneous processes in ozonizers with oxygen activation by a dielectric barrier discharge
- Авторы: Mankelevich Y.1, Voronina E.1,2, Poroykov A.1, Rakhimov T.1, Voloshin D.1, Chukalovsky A.1
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Учреждения:
- Skobeltsyn Institute of Nuclear Physics
- Faculty of Physics
- Выпуск: Том 42, № 10 (2016)
- Страницы: 956-969
- Раздел: Ion and Plasma Sources
- URL: https://journals.rcsi.science/1063-780X/article/view/185976
- DOI: https://doi.org/10.1134/S1063780X16100056
- ID: 185976
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Аннотация
Plasmachemical and heterogeneous processes of generation and loss of ozone in the atmosphericpressure dielectric barrier discharge in oxygen are studied theoretically. Plasmachemical and electronic kinetics in the stage of development and decay of a single plasma filament (microdischarge) are calculated numerically with and without allowance for the effects of ozone vibrational excitation and high initial ozone concentration. The developed analytical approach is applied to determine the output ozone concentration taking into account ozone heterogeneous losses on the Al2O3 dielectric surface. Using the results of quantummechanical calculations by the method of density functional theory, a multistage catalytic mechanism of heterogeneous ozone loss based on the initial passivation of a pure Al2O3 surface by ozone and the subsequent interaction of O3 molecules with the passivated surface is proposed. It is shown that the conversion reaction 2O3 → 3O2 of a gas-phase ozone molecule with a physically adsorbed ozone molecule can result in the saturation of the maximum achievable ozone concentration at high specific energy depositions, the nonstationarity of the output ozone concentration, and its dependence on the prehistory of ozonizer operation.
Об авторах
Yu. Mankelevich
Skobeltsyn Institute of Nuclear Physics
Автор, ответственный за переписку.
Email: ymankelevich@mics.msu.su
Россия, Moscow, 119991
E. Voronina
Skobeltsyn Institute of Nuclear Physics; Faculty of Physics
Email: ymankelevich@mics.msu.su
Россия, Moscow, 119991; Moscow, 119991
A. Poroykov
Skobeltsyn Institute of Nuclear Physics
Email: ymankelevich@mics.msu.su
Россия, Moscow, 119991
T. Rakhimov
Skobeltsyn Institute of Nuclear Physics
Email: ymankelevich@mics.msu.su
Россия, Moscow, 119991
D. Voloshin
Skobeltsyn Institute of Nuclear Physics
Email: ymankelevich@mics.msu.su
Россия, Moscow, 119991
A. Chukalovsky
Skobeltsyn Institute of Nuclear Physics
Email: ymankelevich@mics.msu.su
Россия, Moscow, 119991