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Rate constant for the reaction of OH radicals with dimethyl sulfide

✍ Scribed by Yen-Chung Hsu; Dze-Shu Chen; Yuan-Pern Lee

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 485 KB
Volume: 19
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550191204

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✦ Synopsis

The rate constants of the gas phase reaction of OH radicals with dimethyl sulfide (CH3SCH3) over the temperature range 260-393 K have been studied using the discharge flow-resonance fluorescence technique. The rate constants were fitted by the Arrhenius equation k = (11.8 2 2.2) x exp[-(236 2 150)/T] cm' molecule-' s-' with k = (5.5 * 1.0) x cm3 molecule-' s-l at 298 K. Our results are in good agreement with the lower range of values reported previously. The observation of a small positive activation energy agrees well with that reported by Hynes et al. The rate constant was not affected by the total pressure variation (0.8-3.0 torr) or by the addition of oxygen (up to 1 torr) in the flow tube.

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