Rate constants for the gas-phase reactions of cyclo-CX=CXCF2CF2- (X = H, F) with OH radicals at a temperature range of 253-328 K

Jia XQ; Chen L; Mizukado J; Kutsuna S; Tokuhashi K

Chemical Physics Letters, Vol.572, 21-25, 2013

DOI10.1016/j.cplett.2013.04.020 Export Citation

Rate constants for the gas-phase reactions of cyclo-CX=CXCF2CF2- (X = H, F) with OH radicals at a temperature range of 253-328 K

Jia XQ, Chen L, Mizukado J, Kutsuna S, Tokuhashi K

Using a relative rate method, rate constants of cyclo-CF=CFCF2CF2-, cyclo-CH=CFCF2CF2-, and cyclo-CH=CHCF2CF2- reaction with OH radicals were determined to be (3.15 +/- 0.93) x 10(-13) exp[(630 +/- 90)/T], (4.60 +/- 1.31) x 10(-13) exp[(600 +/- 80)/T], and (3.28 +/- 0.57) x 10(-13) exp[(190 +/- 50)/T] between 253 and 328 K, and (3.79 +/- 0.11) x 10(-14), (6.15 +/- 0.16) x 10(-14), and (1.73 +/- 0.03) x 10(-13) cm(3) molecule(-1) s(-1) at 298 K. The atmospheric lifetimes and GWPs for the 100 year time horizon were estimated to be 1.02, 0.63, and 0.19 years, and 119, 76, and 20. (C) 2013 Elsevier B. V. All rights reserved.