✦ LIBER ✦

Kinetics of OH reactions with furan, thiophene, and tetrahydrothiophene

✍ Scribed by P. H. Wine; R. J. Thompson

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 588 KB
Volume: 16
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550160707

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✦ Synopsis

The kinetics of OH reactions with furan (kl), thiophene (k2), and tetrahydrothiophene ( k 3 ) , have been investigated over the temperature range 254-425 K. OH radicals were produced by flash photolysis of water vapor at h > 165 nm and detected by timeresolved resonance fluorescence spectroscopy. The following Arrhenius expressions adequately describe the measured rate constants as a function of temperature (units are cm3 molecule-' s-I): k, = (1.33 -t 0.29) x lo-" exp[(333 ? 67)/n, k, = (3.20 t 0.70) x lo-'' exp[(325 -t 71)/U, k, = (1.13 t-0.35) x lo-" exp[(166 t-97)/27. The results are compared with previous investigations and their implications regarding reaction mechanisms and atmospheric residence times are discussed.

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