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FTIR study of the reaction of ethyl radicals with O 2 and Cl 2 in air at 295 K
Author(s) -
Wallington Timothy J.,
Andino Jean M.,
Kaiser E. W.,
Japar Steven M.
Publication year - 1989
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550211204
Subject(s) - radical , chemistry , torr , fourier transform infrared spectroscopy , yield (engineering) , molecule , analytical chemistry (journal) , reaction rate constant , infrared , oxygen , infrared spectroscopy , chlorine , kinetics , organic chemistry , thermodynamics , physics , quantum mechanics , optics
Using Fourier transform infrared spectroscopy, the ethene yield from the reaction of C 2 H 5 radicals with O 2 has been determined to be 1.50 ± 0.09%, 0.85 ± 0.11%, and <0.1% at total pressures of 25, 50, and 700 torr, respectively. Additionally, the rate constant of the reaction of C 2 H 5 radicals with molecular chlorine was measured relative to that with molecular oxygen.A ratio k 6 / k 7 = 1.99 ± 0.14 was measured at 700 torr total pressure which, together with the literature value of k 7 = 4.4 × 10 −12 cm 3 molecule −1 s −1 , yields k 6 = (8.8 ± 0.6) × 10 −12 cm 3 molecule −1 s −1 . Quoted errors represent 2σ. These results are discussed with respect to previous kinetic and mechanistic studies of C 2 H 5 radicals.