Physicochemical Mechanisms and Kinetic Laws Influencing the Extreme Rate of Reactions in the Combustion and Detonation of Gases

Results from studying on kinetic features of reactions in the combustion, explosion, and detonation of gases are generalized with the combined use of kinetic and spectroscopic means. It is established that despite original concepts, the chemical processes in all regimes of combustion are chain react...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2022-10, Vol.96 (10), p.2069-2081
Main Authors: Azatyan, V. V., Prokopenko, V. M., Timerbulatov, T. R.
Format: Article
Language:English
Subjects:
Chain reactions (chemistry)
Challenges in Physical Chemistry
Chemical reactions
Chemistry
Chemistry and Materials Science
Combustion
Developmental Trends
Gas detonation
Physical Chemistry
Problems
Temperature dependence
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Summary:Results from studying on kinetic features of reactions in the combustion, explosion, and detonation of gases are generalized with the combined use of kinetic and spectroscopic means. It is established that despite original concepts, the chemical processes in all regimes of combustion are chain reactions that proceed according to previously unknown laws of non-isothermal chain processes. The characteristic periods of reactions in detonation and propagating flames are shown to be less than one ten thousandth and millionth of a second, respectively. The kinetic mechanism and law governing such rates and accelerations and their extremely strong temperature dependence are explained. The crucial role of high concentrations of atoms and radicals is demonstrated. Efficient chemical means of controlling all regimes of combustion are developed.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024422100053