The kinetics of the reaction between fluorine and ethylene in a diffusion flame

Kinetic study of the F2 + C2H4 reaction: Disagreement between theory and experiment resolved?

“…slightly higher than the activation energy of 4.6 kcal mol -1 reported by Kapralova et al. [16] and lower than the activation energy determined in the present work (7.7 ± 0.3 kcal mol -1 ). The source of disagreement between the reaction threshold measured by Lu et al [2] and activation energy determined in the present work is not clear.…”

“…All the results obtained for k 1 at different temperatures in the present study are shown in where the cited uncertainties are 2 statistical ones. Three previous studies [14][15][16] differs significantly from that of the present study, the agreement of the absolute values of k 1 from current and previous studies (within a factor of 2.3) can be considered as satisfactory given the non-direct nature of the measurements in refs. [14][15][16].…”

“…reported indirect measurements of the rate constant of reaction(1). Kapralova et al[16] have studied the reaction of F 2 with C 2 H 4 in the temperature range T = 298-430 K and pressure range 11-43 Torr (mainly C 2 H 4 ) using diffusion flame method combined with temperature measurements in the reaction zone and reported the following expression for the rate constant: k 1 = 8×10 -14 exp(-4600/RT) cm3 molecule -1 s -1 . The mean values of the rate constant obtained by Kapralova et al[16] at three temperatures are shown in Fig.…”