Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation

Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation

Smog chamber/FTIR techniques were used to study the products and mechanisms of OH radical and Cl atom initiated oxidation of trans-CF<sub>3</sub>CH=CHF in 700 Torr of N<sub>2</sub>/O<sub>2</sub> diluent at 295&plusmn;1 K. Hydroxyl radical initiated oxidation l...

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Main Authors: T. J. Wallington, M. D. Hurley, O. J. Nielsen, M. S. Javadi, R. Søndergaard
Format: Article
Language:English
Published: Copernicus Publications 2008-06-01
Series:Atmospheric Chemistry and Physics
Online Access:http://www.atmos-chem-phys.net/8/3141/2008/acp-8-3141-2008.pdf
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spelling doaj-8bd3423521bb47be872d8ec45a3ad3832020-11-24T23:04:59ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242008-06-0181231413147Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidationT. J. WallingtonM. D. HurleyO. J. NielsenM. S. JavadiR. SøndergaardSmog chamber/FTIR techniques were used to study the products and mechanisms of OH radical and Cl atom initiated oxidation of trans-CF<sub>3</sub>CH=CHF in 700 Torr of N<sub>2</sub>/O<sub>2</sub> diluent at 295&plusmn;1 K. Hydroxyl radical initiated oxidation leads to the formation of CF<sub>3</sub>CHO and HC(O)F in yields which were indistinguishable from 100% and were not dependent on the O<sub>2</sub> partial pressure. Chlorine atom initiated oxidation gives HC(O)F, CF<sub>3</sub>CHO, CF<sub>3</sub>C(O)Cl, and CF<sub>3</sub>C(O)CHFCl. The yields of CF<sub>3</sub>C(O)Cl and CF<sub>3</sub>C(O)CHFCl increased at the expense of HC(O)F and CF<sub>3</sub>CHO as the O<sub>2</sub> partial pressure was increased over the range 5–700 Torr. The results are discussed with respect to the atmospheric chemistry and environmental impact of trans-CF<sub>3</sub>CH=CHF. http://www.atmos-chem-phys.net/8/3141/2008/acp-8-3141-2008.pdf
collection DOAJ
language English
format Article
sources DOAJ
author T. J. Wallington
M. D. Hurley
O. J. Nielsen
M. S. Javadi
R. Søndergaard
spellingShingle T. J. Wallington
M. D. Hurley
O. J. Nielsen
M. S. Javadi
R. Søndergaard
Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation
Atmospheric Chemistry and Physics
author_facet T. J. Wallington
M. D. Hurley
O. J. Nielsen
M. S. Javadi
R. Søndergaard
author_sort T. J. Wallington
title Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation
title_short Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation
title_full Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation
title_fullStr Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation
title_full_unstemmed Atmospheric chemistry of trans-CF3CH=CHF: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation
title_sort atmospheric chemistry of trans-cf3ch=chf: products and mechanisms of hydroxyl radical and chlorine atom initiated oxidation
publisher Copernicus Publications
series Atmospheric Chemistry and Physics
issn 1680-7316
1680-7324
publishDate 2008-06-01
description Smog chamber/FTIR techniques were used to study the products and mechanisms of OH radical and Cl atom initiated oxidation of trans-CF<sub>3</sub>CH=CHF in 700 Torr of N<sub>2</sub>/O<sub>2</sub> diluent at 295&plusmn;1 K. Hydroxyl radical initiated oxidation leads to the formation of CF<sub>3</sub>CHO and HC(O)F in yields which were indistinguishable from 100% and were not dependent on the O<sub>2</sub> partial pressure. Chlorine atom initiated oxidation gives HC(O)F, CF<sub>3</sub>CHO, CF<sub>3</sub>C(O)Cl, and CF<sub>3</sub>C(O)CHFCl. The yields of CF<sub>3</sub>C(O)Cl and CF<sub>3</sub>C(O)CHFCl increased at the expense of HC(O)F and CF<sub>3</sub>CHO as the O<sub>2</sub> partial pressure was increased over the range 5–700 Torr. The results are discussed with respect to the atmospheric chemistry and environmental impact of trans-CF<sub>3</sub>CH=CHF.
url http://www.atmos-chem-phys.net/8/3141/2008/acp-8-3141-2008.pdf
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AT rsøndergaard atmosphericchemistryoftranscf3chchfproductsandmechanismsofhydroxylradicalandchlorineatominitiatedoxidation
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