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FTIR study of the reaction of ethyl radicals with O2 and Cl2 in air at 295 K

✍ Scribed by Timothy J. Wallington; Jean M. Andino; E. W. Kaiser; Steven M. Japar

Publisher: John Wiley and Sons
Year: 1989
Tongue: English
Weight: 490 KB
Volume: 21
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550211204

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✦ Synopsis

Using Fourier transform infrared spectroscopy, the ethene yield from the reaction of C2H5 radicals with O2 has been determined to be 1.50 ? 0.098, 0.85 ? 0.118, and < O . l % at total pressures of 25, 50, and 700 torr, respectively. Additionally, the rate constant of the reaction of CzHs radicals with molecular chlorine was measured relative to that with molecular oxygen.

( 6)

C2H5 + O2products A ratio k 6 / k 7 = 1.99 ? 0.14 was measured at 700 torr total pressure which, together with the literature value of k7 = 4.4 x lo-'' cm3 molecule-' s-', yields ks = (8.8 ? 0.6) x lo-'' cm3 molecule-' s-'. Quoted errors represent 2a. These results are discussed with respect to previous kinetic and mechanistic studies of C2H5 radicals.

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