KINETICS OF THE REACTION OF GROUND-STATE OXYGEN-ATOMS WITH TRICHLOROETHYLENE FROM 295 TO 1127 K - COMPARISON TO REACTIONS WITH SOME OTHER SUBSTITUTED ETHYLENES
J. Hranisavljevic et A. Fontijn, KINETICS OF THE REACTION OF GROUND-STATE OXYGEN-ATOMS WITH TRICHLOROETHYLENE FROM 295 TO 1127 K - COMPARISON TO REACTIONS WITH SOME OTHER SUBSTITUTED ETHYLENES, Journal of physical chemistry, 99(34), 1995, pp. 12809-12813
Rate coefficient measurements for the reaction O(P-3) + trichloroethyl
ene have been obtained in two types of high-temperature photochemistry
(HTP) reactors. Ground state oxygen atoms were produced by either fla
sh photolysis or laser photolysis of SO2 or O2, and their relative con
centrations were monitored by resonance fluorescence. The data are wel
l fitted by k(295-1127 K) = 1.1 x 10-(12) exp(-695 K/T) + 1.5 x 10(-9)
exp(-7508 K/T) cm(3) molecule(-1) s(-1), with 2 sigma precision limit
s varying from +/-3% to +/-12% and 2 sigma accuracy limits of approxim
ate to+/-22%. The rate coefficients are compared to those of O atom re
actions with other chloro- and alkyl-substituted ethylenes; a unified
semiempirical k(T) estimation method is established for lower temperat
ures and suggested for higher temperatures. The heat of formation of C
2Cl3 is discussed.