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Kinetics and products of chlorine atom initiated oxidation of HCF 2 OCF 2 OCF 2 CF 2 OCF 2 H and HCF 2 O(CF 2 O) n ‐(CF 2 CF 2 O) m CF 2 H
Author(s) -
Wallington T. J.,
Hurley M. D.,
Javadi M. S.,
Nielsen O. J.
Publication year - 2008
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.20349
Subject(s) - chemistry , kinetics , chlorine , chlorine atom , molar ratio , diluent , medicinal chemistry , analytical chemistry (journal) , nuclear chemistry , catalysis , organic chemistry , physics , quantum mechanics
Smog chamber/FTIR techniques were used to measure k (Cl + HCF 2 OCF 2 OCF 2 ‐CF 2 OCF 2 H) = k (Cl + HCF 2 O(CF 2 O) n (CF 2 CF 2 O) m CF 2 H) = (5.0 ± 1.4) × 10 −17 cm 3 molecule −1 s −1 in 700 Torr of N 2 /O 2 diluent at 296 ± 1 K. The Cl‐initiated atmospheric oxidation of HCF 2 OCF 2 OCF 2 CF 2 OCF 2 H and the sample of HCF 2 O(CF 2 O) n (CF 2 CF 2 O) m CF 2 H used in this work gave COF 2 in molar yields of (476 ± 36)% and (859 ± 63)%, respectively, with no other observable carbon containing products (i.e., essentially complete conversion of both hydrofluoropolyethers into COF 2 ). The results are discussed with respect to the atmospheric chemistry and environmental impact of hydrofluoropolyethers of the general formula HCF 2 O(CF 2 O) n (CF 2 CF 2 O) m CF 2 H. © 2008 Wiley Periodicals, Inc. Int J Chem Kinet 40: 819–825, 2008