CF3BrH2 reaction in shock waves

CF3BrH2 mixtures highly diluted with Ar were studied by using a time‐resolved IR‐emission of HBr and a gas‐chromatography for reaction products. The temperature range covered was 1000–1600 K and the total pressure behind the reflected shock waves used was 1.2–2.6 atm. CF3H, C2F6, and C2F4 were produced and the yields of these products were determined as a function of temperature. The main product under our experimental conditions was CF3H. The mechanism and the rate constants of CF3BrH2 reaction at high temperatures were discussed. The experimental data was satisfactorily modeled using a 14‐reaction mechanism. Reaction (5) played an important role in the formation of CF3H together with reaction (4). equation image The rate constant expression k5 = 2.2 × 1013 exp(−12 kcal/RT) cm3 mol−1 s−1 gave the best agreement between the calculated and observed results.