Trifluoromethane Destruction Mechanism in Methane-Oxygen Flame

Abstract:

Based on the known data on the concentrations of intermediate substances and taking into account only those elementary reactions whose kinetic parameters are known, the mechanism of CF₃H destruction in a flame of methane-oxygen mixtures of various compositions is developed. It is shown that CF₃H destructs in the flame in reactions with O and OH without regeneration. In rich mixture further conversion of CF₃H mainly occurs due to the reactions of CF₃, CF₂, COF₂ with atomic hydrogen, which provide inhibition of methane combustion in oxygen by trifluoromethane. In stoichiometric and especially in lean mixture a role of oxidative processes involving O and OH increases and the inhibition effect weakens. The obtained scheme qualitatively describes the entire known experimental pattern observed during the combustion of CH₄/O₂/CF₃H mixtures.

• Periodical: Materials Science Forum (Volume 1086)
• Pages: 187-192
• DOI: https://doi.org/10.4028/p-0ztk86
• Online since: April 2023
• Authors: S.N. Kopylov*, P.S. Kopylov, I.P. Eltyshev, I.R. Begishev
• Keywords: Combustion, Methane-Oxygen Mixtures, Trifluoromethane

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