Smog chamber/FTIR techniques were used to study the Cl atom initiated oxidation of CF3OCF2H in 700 Torr of N-2/O-2 at 295 +/- 2 K. Atmospheric oxidation of CF3OCF2H proceeds via the formation of CF3OCF2 radicals. The atmospheric fate of CF3OCF2 radicals is addition Of O-2 to give CF3OCF2O2 radicals. In the atmosphere CF3OCF2O, radicals are converted via COF2 and CF3OH into CO2 and HF. Relative rate techniques were used to measure k(Cl + CF3OCF2H) = (2.3 +/- 0.3) x 10(-17) cm(3) molecule(-1) s(-1). The results are discussed with respect to the atmospheric degradation and environmental impact of CF3OCF2H. (C) 2001 Elsevier Science B.V. All rights reserved.
Technology for the preparation of perfluoro-organic compounds
作者:Dmitrii D Moldavskii、Tatjana A Bispen、Galina I Kaurova、Georgii G Furin
DOI:10.1016/s0022-1139(98)00351-0
日期:1999.4
Fluorination by elemental fluorine of fluorine-containing alkenes, alkanes, ethers and tertiary amines was investigated, aimed at obtaining the perfluorinated analogs. The factors affecting yield of the target compounds were studied. Elements of technology were elucidated. (C) 1999 Elsevier Science S.A. All rights reserved.