✦ LIBER ✦

The Reactions of H Atoms with H2S and COS

✍ Scribed by H. Rommel; H. I. Schiff

Publisher: John Wiley and Sons
Year: 1972
Tongue: English
Weight: 515 KB
Volume: 4
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550040509

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✦ Synopsis

The kinetics of the reactions of H atoms with H2S and with COS were measured at 298' K in a flow system using mass-spectrometric detection. The rate constants were found to be 3.8 X 10-13 and 2.2 X lo-'* cm3 part-' sec-l, respectively, with an estimated accuracy of 25y0. At high flow rates of HZS, 0.5 molecules of H2S are consumed per H atom originally present. At all flow rates of COS, HzS is a major product, CO production equals COS consumption, and 0.5 molecules of COS are consumed per H atom. The results are consistent with the reaction HS + HS ---f H& + S being the dominant process for thiyl radicals, and evidence is presented to indicate that its reaction rate is close to collisional frequency.

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