A new insight into the contested origin of the absence of radical reaction in the pyrolysis of CF 2 ClCH 3 is given. This chain reaction would be too slow compared with the molecular reaction because of a too slow homogeneous initiation leading to a too fast wall recombination of the Cl atom chain c
Kinetics and mechanism of the pyrolysis of 1-chloro-1,1-difluoroethane in the presence of additives
β Scribed by G. Huybrechts; G. Van Assche; S. Van Der Auwera
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 162 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0538-8066
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β¦ Synopsis
The thermal dehydrochlorination has been studied CF ClCH : CF " CH Ο© HCl 2 3 2 2 in a static system between 597 and in the presence of CCl 4 , C 2 Cl 6 , CF 2 "CH 2 , HCl, and 664 K CF 3 CH 3 . A kinetic radical and molecular reaction model has been developed. In addition to describing earlier results on the acceleration of the pyrolysis by CCl 4 and the further acceleration by HCl, this model describes quantitatively up to conversions of 20% (i) the dependence of the catalytic effect of CCl 4 at low concentrations, (ii) the stronger catalytic effect of C 2 Cl 6 , and (iii) the inhibitory effect of added CF 2 CH 2 and CF 3 CH 3 when CCl 4 is used as a catalyst.
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