Kinetics of the gas phase reactions of chlorine atoms and OH radicals with CF3CBr = CH2 and CF3CF2CBr = CH2

TY - JOUR

T1 - Kinetics of the gas phase reactions of chlorine atoms and OH radicals with CF3CBr = CH2 and CF3CF2CBr = CH2

AU - Andersen, Mads Peter Sulbæk

AU - Hurley, M. D.

AU - Wallington, T. J.

PY - 2009

Y1 - 2009

N2 - Long path length FTIR/smog chamber techniques were used to study the kinetics of the reactions of Cl atoms and OH radicals with CF3CBr=CH2 and CF3CF2CBr=CH2 in 700 Torr of N-2 or air diluent at 296 +/- 2 K. The reactions proceed with rate constants of k(Cl + CF3CBr=CH2) = (9.20 +/- 0.54) x 10 (11), k(OH + CF3CBr=CH2) = (4.21 +/- 0.45) x 10 (12), k(Cl + CF3CF2CBr=CH2) = (8.44 +/- 0.51) x 10 (11), and k(OH + CF3CF2CBr=CH2) = (3.48 +/- 0.34) x 10 (12) cm(3) molecule (1) s (1). The atmospheric lifetimes of CF3CBr=CH2 and CF3CF2CBr=CH2 are approximately 2.8 and 3.4 days, respectively. These compounds will not contribute significantly to radiative forcing of climate change. (C) 2009 Elsevier B. V. All rights reserved.

AB - Long path length FTIR/smog chamber techniques were used to study the kinetics of the reactions of Cl atoms and OH radicals with CF3CBr=CH2 and CF3CF2CBr=CH2 in 700 Torr of N-2 or air diluent at 296 +/- 2 K. The reactions proceed with rate constants of k(Cl + CF3CBr=CH2) = (9.20 +/- 0.54) x 10 (11), k(OH + CF3CBr=CH2) = (4.21 +/- 0.45) x 10 (12), k(Cl + CF3CF2CBr=CH2) = (8.44 +/- 0.51) x 10 (11), and k(OH + CF3CF2CBr=CH2) = (3.48 +/- 0.34) x 10 (12) cm(3) molecule (1) s (1). The atmospheric lifetimes of CF3CBr=CH2 and CF3CF2CBr=CH2 are approximately 2.8 and 3.4 days, respectively. These compounds will not contribute significantly to radiative forcing of climate change. (C) 2009 Elsevier B. V. All rights reserved.

U2 - 10.1016/j.cplett.2009.09.056

DO - 10.1016/j.cplett.2009.09.056

M3 - Journal article

SN - 0009-2614

VL - 482

SP - 20

EP - 23

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -