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Kinetic behaviour of benzoylperoxy radicals in the presence of NO and NO2

✍ Scribed by F. Kirchner; F. Zabel; K.H. Becker

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 431 KB
Volume: 191
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)85387-p

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✦ Synopsis

Benzoyl peroxynitrate (C6HSC(0)02N02) was prepared in situ in a 420 B photoreactor by continuous photolysis of Cl*/ CsH5CH0/02/N02/N2 mixtures. From the loss of benzoyl peroxynitrate in the presence of different amounts of NO and NOz, rate constants of the reaction CsH5C(0)02N02 (+M) -+CsHsC(0)OZ+N02 ( +M) (-2) and rate constant ratios k,/k, of the reactions CsHSC(0)02+N02 ( +M)+C6H5C(0)OZN02 (+M) (2) and C6HSC(0)02+NO-+products

(1) weredetermined.

The temperature and pressure dependence of k_z can be described by the expressions developed by Troe and co-workers with the fo~owingparameters:~/[Nz]=3.4x10-*exp(-92.6klmo1~'/RT)cm"mo1ecule~'s~',k,=1.1~10"exp(-117.0kTmo1-'/ RT) s-', F,=O.25. The ratio k2/kI is 0.63 f0.07 in the temperature range 310-322 K and in 1000 mbar N2.

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