Rate Constants for Reaction of Cl Atoms with Hydrofluoroethers.

PABLO R. DALMASSO, JORGE D. NIETO, RAÚL A. TACCONE, MARIANO A. TERUEL, SILVIA I. LANE.

John Wiley & Sons, Ltd.

Año: 2006 vol. 19 p. 771 - 771

he relative rate technique was used to measure the rate constants for the reactions of Cl atoms with CHF2OCH2CF3 and CHF2OCHFCF3. Experiments were carried out at 296±2K and atmospheric pressure using nitrogen as the bath gas. Using 1,1,1-trichloroethane and 1,1,1,2-tetrafluoroethane as the reference compounds, the following rate coefficients were derived: k(Cl + CHF2OCH2CF3) = (1.14 ± 0.27) x 10-14 and k(Cl + CHF2OCHFCF3) = (1.20 ± 0.12) x 10-15, in units of cm3 molecule-1 s-1. The rate constants obtained are compared with the literature data. The implications of the results with regard to the atmosphere are briefly considered.