Abstract
Experimental data on the flammability limits and combustion kinetics of propane-air mixtures at atmospheric pressure in the presence and absence of CF3H, C2F5H, CF4, N2, and CO2 additives are presented. It was found that CF3H and C2F5H inhibit the process of combustion. At the same time, the effect of CF4, N2, and CO2 is caused only by mixture dilution, with a marked contribution of heat capacity in the case of CF4 and CO2. The mechanisms of chain termination by the inhibitors and the reasons for their different efficiency in the inhibition of hydrogen and propane combustion are explained.
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References
N. N. Semenov, On some problems of chemical kinetics and reactivity (Akad. Nauk SSSR, Moscow, 1958) [in Russian].
Ya. B. Zeldovich, Ya. B. Barenblat, V. B. Librovich, et al., Mathematical theory of combustion and explosion (Nauka, Moscow, 1980; Plenum, New York, 1985).
D. A. Frank-Kamenetskii, Diffusion and heat transfer in chemical kinetics (Nauka, Moscow, 1987) [in Russian].
E. A. Salgansky, E. V. Polianczuk, and G. B. Manelis, in Proceedings of the international seminar on nonequilibrium processes (Torus Press, Moscow, 2005), p. 230.
J. Warnatz, U. Maas, and R. Dibba, Combustion. Physical and chemical aspects, modeling, experiments, formation of pollutants (Springer, Berlin, 2001; Fizmatlit, Moscow, 2003).
U. Maas and J. Warnatz, Combust. Flame 74, 102 (1988).
V. T. Gontkovskaya, I. S. Gordopolova, and N. I. Ozerkovskaya, Fiz. Goreniya Vzryva 24(1), 53 (1988).
V. M. Kislov, E. A. Salgansky, and G. B. Manelis, in Proceedings of the international seminar on nonequilibrium processes (Torus Press, Moscow, 2005), p. 247.
D. J. Peaks, N. J. Alvares, and D. Z. Benson, Fire Safety J. 2, 237 (1980).
P. Papas, J. W. Fleming, and R. S. Sheinson, in Proceedings of the 26th symposium on combustion (The Combust. Inst., Pittsburgh, 1996), p. 1405.
B. Lewis and G. von Elbe, Combustion, explosions and flame in gases (Academic Press, New York, London, 1987).
V. V. Azatyan, R. G. Aivazyan, V. I. Kalachev, S. N. Kopylov, and A. G. Merzhanov, Khim. Fiz. 17(2), 117 (1998).
Y. Hidaka, T. Nakamura, H. Kawano, et al., Int. J. Chem. Kinet. 25, 983 (1993).
J. Hranisavljevic and J. V. Michael, J. Phys. Chem. A 102, 7668 (1998).
D. L. Baulch, C. T. Bowman, C. J. Cobos, et al., J. Phys. Chem. Ref. Data 34, 757 (2005).
W. Tzang, Ind. Eng. Chem. 31, 3 (1992).
K. Takahashi, Y. Yamamori, and T. Inomata, J. Phys. Chem. A 101, 9105 (1997).
A. A. Avetisyan, V. V. Azatyan, V. I. Kalachev, V. V. Masalova, and A. A. Piloyan, Kinet. Catal. 48, 8 (2007).
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Original Russian Text © V.V. Azatyan, M.S. Pankratov, G.R. Saikova, 2013, published in Khimicheskaya Fizika, 2013, Vol. 32, No. 4, pp. 60–65.
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Azatyan, V.V., Pankratov, M.S. & Saikova, G.R. Specific features of the inhibition of the combustion of propane-air and hydrogen-air mixtures by trifluoromethane and pentafluoroethane. Russ. J. Phys. Chem. B 7, 149–153 (2013). https://doi.org/10.1134/S1990793113020097
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DOI: https://doi.org/10.1134/S1990793113020097