✦ LIBER ✦

Kinetics of the self-reaction of hydroxymethylperoxyl radicals

✍ Scribed by Robert E. Huie; Carol L. Clifton

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 377 KB
Volume: 205
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)89222-4

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✦ Synopsis

The rate constant for the self-reaction of the peroxyl radical derived from methanol, HOCH,OO', has been measured over the temperature range 5-53°C. The radical has a maximum absorptivity of 970 I! mol-' cm-' at 240 nm and an absorptivity of about 510 P mol-' cm-' at 280 nm. From a modified Arrhenius lit to the data, the rate constant at 25°C was calculated to be k ,,K=(7.4~0.1)x lo* I! mol-' s-i and the temperature dependence of the reaction to be E/R=1395f66 K_ As part of this study, the rate eonstant for the recombination of the sulfate radical, SO;', was found to be (4.4 f 0.4) x 10' P mol-' s-', independent of temperature over the range 12 to 53°C.

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