화학공학소재연구정보센터
Chemical Physics Letters, Vol.639, 189-194, 2015
Gas-phase photodissociation of CF3C(O)Cl between 193 and 280 nm
Product yields were measured in the 296 K photolysis of CF3C(O)Cl at 193, 248, 254, and 280 nm. Br-2 was used as a radical scavenger to convert the primary CF3 and CF3CO radical photofragments into stable bromides, CF3Br and CF3C(O)Br, which were quantified along with CO and CF2O using infrared absorption. The stabilized CF3CO radical yield increased with increasing photolysis wavelength from <0.007 at 193 nm to 0.95(-0.10)(+0.05) at 280 nm. An upper-limit for the ClCO radical yield was estimated to be <0.004 at all wavelengths. The CF3Cl quantum yield was determined to be <0.001 at all wavelengths. Published by Elsevier B.V.