Abstract
The rate constant of the reaction between Cl atoms and CHF2Br has been measured by chlorine atom resonance fluorescence in a flow reactor at temperatures of 295–368 K and a pressure of ~1.5 Torr. Lining the inner surface of the reactor with F-32L fluoroplastic makes the rate of the heterogeneous loss of chlorine atoms very low (k het ≤ 5 s–1). The rate constant of the reaction is given by the formula k = (4.23 ± 0.13) × 10–12 e (–15.56 ± 1.58)/RT cm3 molecule–1 s–1 (with the activation energy in kJ/mol units). The possible role of this reaction in the extinguishing of fires producing high concentrations of chlorine atoms is discussed.
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Tapscott, R.E., Sheinson, R.S., Babushok, V., Nyden, M.R., and Gann, R.G., NIST Technical Note 1443, Gaithersburg, Md.: National Inst. of Standards abd Technology, 2001.
Noto, T., Babushok, V., Hamins, A., and Tsang, W., Combust. Flame, 1998, vol. 112, p. 147.
Montreal Protocol on Substances That Deplete the Ozone Layer. United Nations Environment Programme (UNEP): 2006 Assessment Report of the Halons Technical Options Committee, Nairobi, 2006.
Platt, U. and Honniger, G., Chemosphere, 2003, vol. 52, p. 325.
Richard, G. and Gann, R.G., National Institute of Standards and Technology. EDP Sciences, 1998, p. 1.
Hsu, K.J. and DeMore, W.B., J. Phys. Chem., 1995, vol. 99, p. 1235.
Orkin, V.L. and Khamaganov, V.G., J. Atmos. Chem., 1993, vol. 16, p. 169.
Scientific Assessment of Ozone Depletion 2006: Global Ozone Research and Monitoring Project, Report no. 50, Geneva, Switzerland, p. 572.
Larin, I.K., Khimicheskaya fizika ozonovogo sloya (Chemical Physics of the Ozone Layer), Moscow: GEOS, 2013.
Zholudev, E.R., Cand. Sci. (Eng.) Dissertation, Kemerovo: Research Inst. of Mine Rescue Work, 2006.
Larin, I.K., Belyakova, T.I., Messineva, N.A., Spasskii, A.I., and Trofimova, E.M., Kinet. Catal., 2014, vol. 55, p. 549.
McFiggans, G., Cox, R.A., Mossinger, J.C., Allan, B.J., and Plane, J.M.C., J. Geophys. Res., 2002, vol. 107, p. 15.
Van den Berg, M., Birnbaum, L., Bosveld, A.T.C., Brunstrom, B., Cook, P., Feeley, M., Giesy, J.P., Hanberg, A., Hasegawa, R., Kennedy, S.W., Kubiak, T., Larsen, J.C., Van Leeuwen, F.X.R., Liem, A.K.D., Nolt, C., et al., Environ. Health Perspect., 1998, vol. 106, p. 775.
Buekens, A. and Huang, H., J. Hazard. Mater., 1998, vol. 62, p. 1.
Vogt, R., Crutzen, P.J., and Sandler, R., Nature, 1996, vol. 383, p. 323.
Donaghy, T., Shanahan, I., Hande, M., and Fitszpatrick, S., Int. J. Chem. Kinet., 1993, vol. 25, p. 273.
Boichenko, M.V., Slashchinin, G.A., and Shakhvorostova, T.S., Aktual’nye Vopr. Sudeb. Med. Ekspert. Prakt., 2011, no. 17, p. 1.
Kikoin, I.K., Tablitsy fizicheskikh velichin (Tables of Physical Data), Moscow: Atomizdat, 1976.
Larin, I.K., Spasskii, A.I., Trofimova, E.M., and Turkin, L.E., Kinet. Catal., 2003, vol. 44, p. 202.
Bilde, M., Sehested, J., Mogelber, T.E., Wallington, T.J., and Nielse, O.J., J. Phys. Chem., 1996, vol. 100, p. 7050.
Zhang, H., Li, Z.S., Liu, J.Y., Sheng, L., and Sun, C.C., J. Mol. Struct.: THEOCHEM, 2004, vol. 674, p. 23.
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Original Russian Text © I.K. Larin, A.I. Spasskii, E.M. Trofimova, N.G. Proncheva, 2016, published in Kinetika i Kataliz, 2016, Vol. 57, No. 3, pp. 308–312.
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Larin, I.K., Spasskii, A.I., Trofimova, E.M. et al. Measuring the rate constant of the reaction between chlorine atoms and CHF2Br by Cl atom resonance fluorescence. Kinet Catal 57, 308–312 (2016). https://doi.org/10.1134/S0023158416030101
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DOI: https://doi.org/10.1134/S0023158416030101