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Temperature dependence of the rate constant for the reaction OH + H2S in He, N2, and O2

✍ Scribed by Yu-Lin Lin; Niann-Shiah Wang; Yuan-Pern Lee

Publisher: John Wiley and Sons
Year: 1985
Tongue: English
Weight: 699 KB
Volume: 17
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550171106

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✦ Synopsis

The rate constants of the reaction between OH and H2S in He, N,, and O2 over the temperature range 245-450 K have been determined using the discharge flow-resonance fluorescence technique. At 299 K, kl = (4.4 ? 0.7) x lo-'' cm3 molecule-' S K I .

T h e t e m p e r a t u r e dependence of t h e r a t e c o n s t a n t c a n be f i t t e d e i t h e r by k l = 5.6 x lo-'* exp(-57/T) or by k, = (3.8 x 10-19)T243 exp(732/T) to within 8 and 996, respectively. However, the non-Arrhenius behavior can be confidently confirmed. The absence of the pressure dependence and the third-body effect a t low temperature suggest that the complex formation mechanism is not important over the temperature range of our study.

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