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Atmospheric chemistry of CF3C(O)O2 radicals. Kinetics of their reaction with NO2 and kinetics of the thermal decomposition of the product CF3C(O)O2NO2

✍ Scribed by Timothy J. Wallington; Jens Sehested; Ole J. Nielsen

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 614 KB
Volume: 226
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00751-9

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✦ Synopsis

A pulse radiolysis technique has been used to measure a rate constant of (6.6f 1.3) x lo-r2 cm3 molecule-' s-i for the association reaction between CF3C(0)02 radicals and NO2 at 295 K and one atmosphere total pressure of SF, diluent. A FAIR/ smog chamber system was used to study the thermal decomposition CF3C(0)02N02. The rate of decomposition of CF3C( 0)02N02 was independent of the total pressure of N2 diluent over the range 100-700 Torr and was lit by the expression k_ , = ( 1.9?]:f ) x 1 016 exp [ ( -14000 k 480) / T] s-'. Implications for the atmospheric chemistry of CFC replacements are discussed.

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