Abstract
Fourier transform infrared (FTIR) smog chamber techniques were used to measure k(Cl + CF3CFHCF2OCF3) = (4.09 +/- 0.42) x 10(-17), k(OH + CF3CFHCF2OCF3) = (1.43 +/- 0.28) x 10(-15), k(Cl + CF3CFHCF2OCF2H) = (6.89 +/- 1.29) x 10(-17), and k(OH + CF3CFHCF2OCF2H) = (1.79 +/- 0.34) x 10(-15) cm(3) molecule(-1) s(-1) in 700 Torr of N-2/O-2 diluent at 296 K. The atmospheric lifetimes of CF3CFHCF2OCF3 and CF3CFHCFOCF2H are approximately 40 and 32 years, respectively. Chlorine atom-initiated oxidation of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H gives CF3C(O)F in molar yields of 82 +/- 5% and 96 +/- 6 respectively. The 100-year time horizon global warming potentials of CF3CFHCF2OCF3 and CF3CFHCF2OCF2H relative to CO2 are 4530 and 4340. Results are discussed with respect to the atmospheric chemistry of hydrofluoroethers.
| Original language | Undefined/Unknown |
|---|---|
| Journal | Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory |
| Volume | 108 |
| Issue number | 51 |
| Pages (from-to) | 11333-11338 |
| Number of pages | 6 |
| ISSN | 1089-5639 |
| DOIs | |
| Publication status | Published - 23 Dec 2004 |