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Kinetics of the thermal decomposition of bis-pentafluorosulfur trioxide(SF5O3SF5) in the presence of carbon monoxide

✍ Scribed by J. Czarnowski; H. J. Schumacher

Publisher: John Wiley and Sons
Year: 1979
Tongue: English
Weight: 342 KB
Volume: 11
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550111007

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✦ Synopsis

The thermal decomposition of SFsOsSFs in the presence of CO has been investigated between -9.8"C and + 9.9"C. Besides traces of S2F10, equimolecular amounts of SFsOrSFs ;ind CO? are formed.

The reaction is homogeneous. Its rate is proportional to the pressure of the trioxide and independent of the total pressure, the pressure of inert gases and of carbon monoxide: d[SFso:jSF~l d[SF,?O?SFs -= + = ~[ S F ~O ~S F S ] d t dt where k = k,, = 10'6"2*040 exp(-25,300 f 500 cal)lRT sec-I. Consequently, D S F ~O -O ~S F ~ = 25.3 f 0.5 kcal

In the presence of oxygen a sensitized C02 formation is observed. A mechanism is given which cxplains the experimental results.

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