Abstract
The main cause of the previously unexplainable most important features of gas-phase combustion was determined. It was shown that the sharp acceleration of combustion during heating and the high rates are primarily caused not by an increase in the rate constant of the limiting step, as was previously believed, but by an increase in the concentration of active intermediate particles with temperature as an exponential function of a positive exponential function of the Boltzmann factor. Such a character of the temperature dependence governs the transition from combustion to explosion and detonation.
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Funding
This work was supported by the Ministry of Education and Science of the Russian Federation under State contract no. 05.607.21.0304 (contract identifier RFMTF160719X0304) “Development of Efficient Methods of Chemical Inhibition of Homogeneous and Heterogeneous Combustion Processes” within the framework of the Federal Target Program “Research and Development in Top-Priority Areas of Science and Technology in Russia for 2014–2020” and by the Russian Foundation for Basic Research (project no. 18-03-00489).
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Translated by V. Glyanchenko
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Azatyan, V.V. Specificity of the Temperature Dependence of the Gas Combustion Reaction Rates. Dokl Phys Chem 495, 186–190 (2020). https://doi.org/10.1134/S0012501620120015
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DOI: https://doi.org/10.1134/S0012501620120015