Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics p. 77 - 83 (1990)
Update date:2022-09-26
Topics:
Kirchner
Helf
Ott
Vogt
The kinetics and product formation of the homogeneous gas-phase reactions of the OH radical with 1,1-di-, tri- and tetrachloroethylene were investigated at temperatures between 298-459 K, in the pressure range of 0.5-5.6 mbar. Measurements were made in a discharge-flow apparatus, using helium as the carrier gas. The OH radical and the reaction products were detected by mass spectrometry. The rate constants were observed to be pressure independent in the case of 1,1-di- and tetrachloroethylene but slightly pressure dependent in the case of trichloroethylene. The temperature dependencies are expressed by Arrhenius equation. The major products are: CH2OH-CCl2 for 1,1-dichloroethylene; 2,2-dichloroethenol and Cl for trichloroethylene; trichloroethenol, dichloracetyl chloride, Cl, CHCl2 and phosgene for tetrachloroethylene.
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