Rate coefficients and ClO radical yields in the reaction of O( 1 D) with CClF 2 CCl 2 F, CCl 3 CF 3 , CClF 2 CClF 2 , and CCl 2 FCF 3

• Published in: International journal of chemical kinetics 2011-08, Vol.43 (8), p.393-401
• Main Authors: Baasandorj, Munkhbayar, Feierabend, Karl J., Burkholder, James B.
• Format: Article
• Language: English
• ISSN: 0538-8066; 1097-4601
• DOI: 10.1002/kin.20561

Rate coefficients, k , and ClO radical product yields, Y , for the gas‐phase reaction of O( 1 D) with CClF 2 CCl 2 F (CFC‐113) ( k 2 ), CCl 3 CF 3 (CFC‐113a) ( k 3 ), CClF 2 CClF 2 (CFC‐114) ( k 4 ), and CCl 2 FCF 3 (CFC‐114a) ( k 5 ) at 296 K are reported. Rate coefficients for the loss of O( 1 D) were measured using a competitive reaction technique, with n ‐butane ( n ‐C 4 H 10 ) as the reference reactant, employing pulsed laser photolysis production of O( 1 D) combined with laser‐induced fluorescence detection of the OH radical temporal profile. Rate coefficients were measured to be k 2 = (2.33 ± 0.40) × 10 −10 cm 3 molecule −1 s −1 , k 3 = (2.61 ± 0.40) × 10 −10 cm 3 molecule −1 s −1 , k 4 = (1.42 ± 0.25) × 10 −10 cm 3 molecule −1 s −1 , and k 5 = (1.62 ± 0.30) × 10 −10 cm 3 molecule −1 s −1 . ClO radical product yields for reactions (2)–(5) were measured using pulsed laser photolysis combined with cavity ring‐down spectroscopy to be 0.80 ± 0.10, 0.79 ± 0.10, 0.85 ± 0.12, and 0.79 ± 0.10, respectively. The quoted errors in k and Y are at the 2σ (95% confidence) level and include estimated systematic errors. © 2011 Wiley Periodicals, Inc. * This article is a U.S. Government work and, as such, is in the public domain of the United States of America Int J Chem Kinet 43: 393–401, 2011