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ATMOSPHERIC CHEMISTRY OF HYDROFLUOROCARBON 134A - FATE OF THE ALKOXY RADICAL CF3O

被引：87
作者：
SEHESTED, J
WALLINGTON, TJ
机构：
[1] FORD MOTOR CO,POB 2053,DEARBORN,MI 48121
[2] RISO NATL LAB,DEPT ENVIRONM SCI & TECHNOL,CHEM REACT SECT,DK-4000 ROSKILDE,DENMARK
来源：
ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1993年 / 27卷 / 01期
关键词：
D O I：
10.1021/es00038a016
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The atmospheric chemistry of the alkoxy radical CF3O produced in the photooxidation of hydrofluorocarbon (HFC) 134a has been investigated using Fourier transform infrared spectroscopy. CF3O radicals are shown to react with methane and CF3CFH2 to give CF3OH. CF3OH decomposes to give COF2 and HF. The rate constant for the reaction CF3O + CF3CFH2 (HFC-134a) - CF3OH + CF3CFH was determined to be k19 = (1.1 +/- 0.7) X 10(-15) cm3 molecule-1 s-1 at 297 K. The implications of our results for the atmospheric chemistry of CF3O radicals and HFC-134a are discussed.
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页码：146 / 152
页数：7
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