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Kinetics of decomposition of 1,1-diamino-2,2-dinitroethylene (fox-7). 5. Vapor pressure and reaction in the gas phase
- Authors: Nazin G.M.1, Kazakov A.I.1, Larikova T.S.1, Nabatova A.V.1, Volkova N.N.1
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Affiliations:
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
- Issue: Vol 43, No 5 (2024)
- Pages: 13-19
- Section: Kinetics and mechanism of chemical reactions, catalysis
- URL: https://vestnikugrasu.org/0207-401X/article/view/674943
- DOI: https://doi.org/10.31857/S0207401X24050027
- ID: 674943
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Abstract
The pressure of β-FOX-7 vapors in the temperature range 140–160 °C was determined by the manometric method. The correlation dependence of logPvap on 1/T has been established, which makes it possible to estimate the value of Pvap with satisfactory accuracy in the temperature range of 100–200°C. The kinetics of the reaction in the gas phase was measured at temperatures of 200–230 °C and m/V = 10–3–10–4 g/cm3. It was found that under these conditions, in parallel with the usual monomolecular isomerization reaction into aci-form, a chain process of direct oxidation of FOX-7 by NO2 proceeds. The consequence of this reaction is a significant decrease in the activation energy observed and the appearance of rate dependence on the experimental conditions. The scheme of the main stages of the chain reaction is presented and the conditions necessary for the manifestation of this reaction are determined.
About the authors
G. M. Nazin
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
Email: akazakov@icp.ac.ru
Russian Federation, Chernogolovka
A. I. Kazakov
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
Author for correspondence.
Email: akazakov@icp.ac.ru
Russian Federation, Chernogolovka
T. S. Larikova
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
Email: akazakov@icp.ac.ru
Russian Federation, Chernogolovka
A. V. Nabatova
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
Email: akazakov@icp.ac.ru
Russian Federation, Chernogolovka
N. N. Volkova
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
Email: akazakov@icp.ac.ru
Russian Federation, Chernogolovka
References
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