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Kinetics of the reactions of atomic chlorine with methanol and the hydroxymethyl radical with molecular oxygen at 298 K

✍ Scribed by W. A. Payne; J. Brunning; M. B. Mitchell; L. J. Stief

Publisher: John Wiley and Sons
Year: 1988
Tongue: English
Weight: 533 KB
Volume: 20
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550200108

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✦ Synopsis

The rate constants for the reactions C1 + CH,OD + CH,OD + HCI (1) and CH,OH + 0, -HO, + H2C0 (2) have been determined in a discharge flow system near 1 torr pressure with detection of radical and molecular species using collision-free sampling mass spectrometry. The rate constant k l , determined from the decay of CH30D in the presence of excess C1, is (5.1 t 1.0) x lo-" cm3 s-'. This is in reasonable agreement with the only previous measurement of k,. The CH,OH radical was produced by reaction (1) and its reaction with 0, was studied by monitoring the decay of the CH,OH radical in the presence of excess 0,. The result is k , = (8.6 ? 2.0) x 10 l2 cm3 s-'. Previous estimates of k , have differed by nearly an order of magnitude, and our value for k, supports the more recent high values.

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