Temperature dependence of the gas phase reactions of CF3O with CH4 and NO

Article abstract of DOI:10.1021/j100085a042

A temperature-regulated flow tube reactor coupled to a chemical ionization mass spectrometer (CIMS) was used to investigate reactions of CF₃O with CH₄ and NO. The reaction rate for the CF₃O + CH₄ reaction was measured in the temperature range 231-385 K and found to be k₃(T) = (3.1 ± 0.5) × 10^-12 exp[(-1470 ± 250) K/T]cm³ molecule^-1 s^-1, with k₃(298 K) = (2.2 ± 0.4) × 10^-14 cm³ molecule^MIN1 (where the uncertainties represents our estimated accuracy at the 95 % confidence level). The latter is in good agreement with recently reported measurements at room temperature. The reaction rate constant for the CF₃O + NO reaction was measured in the temperature range 231-393 K and found to be k₄(T) = (4.1 ± 0.6) × 10^-11 disagrees with two previously reported values by a factor of about 2.5 but is in good agreement with three recently reported values. The results reported in this study are important in establishing the fate of the CF₃O_x radicals produced as degradation products from hydroflurocarbons (HFC's) in the atmosphere.