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Direct detection of CF 2 and computer modeling of its appearance in the fluorination of CH 2 F 2
Author(s) -
Seeger C.,
Rotzoll G.,
Lübbert A.,
Schügerl K.
Publication year - 1982
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550140503
Subject(s) - chemistry
The branched chain reaction between CH 2 F 2 and F 2 is studied in a miniature tubular reactor having a diameter of 1.1 mm. The gases at the end of the tube expand into a low‐pressure chamber and are analyzed by molecular beam detection. The branching intermediate CF 2 is detected directly at low ionization energies. An approximate quantitative reaction model for the fluorination of CH 2 F 2 is proposed and discussed. The influence of the unknown rate constants in this scheme on the course of the reaction is examined. For the most reasonable set of rate constants the unknown rate constant for the branching reaction CF 2 + F 2 → CF 3 + F at 550 K is found to be log k = 10.7 [cm 3 /mol·s].