Two-modes model of the non-equilibrium plasma chemical dissociation of CO 2

The vibrational kinetics model of the dissociation process CO 2 + M → CO + O + M based on the two-modes (symmetric–asymmetric) approximation is presented. The model has shown to produce the effective dissociation rate of CO 2 under conditions of thermal equilibrium close to that obtained experimenta...

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Bibliographic Details
Published in:Plasma sources science & technology 2021-05, Vol.30 (5), p.55003
Main Author: Kotov, Vladislav
Format: Article
Language:English
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Summary:The vibrational kinetics model of the dissociation process CO 2 + M → CO + O + M based on the two-modes (symmetric–asymmetric) approximation is presented. The model has shown to produce the effective dissociation rate of CO 2 under conditions of thermal equilibrium close to that obtained experimentally. Results of the 0D calculations of the CO 2 conversion in non-equilibrium conditions of a microwave plasma discharge are discussed. The chemical energy efficiency obtained in the calculations at translational-rotational temperature 300 K and degree of ionization 10 −5 is between 42 and 56% depending on the assumptions. The efficiency is found to reduce and eventually vanish at elevated temperatures.
ISSN:0963-0252
1361-6595
DOI:10.1088/1361-6595/abf368