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UV absorption study of the dissociation of SO2 and SO in shock waves

✍ Scribed by H. J. Plach; J. Troe

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 515 KB
Volume: 16
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550161207

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✦ Synopsis

The thermal decomposition of SO, and of the primary dissociation product SO have been studied in shock waves by the uv absorption technique. The controversy about SO, dissociation data from uv absorption signals was resolved and attributed to the extensive overlap of SO, and SO uv absorption spectra. The derived rate coefficients are k,/[Ar] = exp(-420 kJmol-'/RT) cm3mol-' s (temperature range 3000-5000 K) for SO, dissociation, and k,/[Arl = exp(-448 kJmol-'/RT) cm3 mol-' s ~ ' (temperature range 4000-6000 K) for SO dissociation. Anomalously high values of the apparent collision efficiencies & in SO, dissociation are attributed to marked contributions from excited electronic states.

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