BARC/PUB/10//0614

 
 

Kinetic study of the gas-phase reaction of hydroxyl radical with CF3CH2OCH2CF3 using the laser photolysis-laser induced fluorescence method

 
     
 
Author(s)

Sengupta, S.; Indulkar, Y.; Kumar, A.; Dhanya, S.; Naik, P. D.; Bajaj, P. N.

ABSTRACT

The laser photolysis-laser-induced fluorescence method was used for measuring the kinetic parameters of the reaction of OH radicals with CF3CH2OCH2CF3 (2,2,2-trifluoroethyl ether), in the temperature range of 298-365 K. The bimolecular rate coefficient at 298 K, kII(298), was measured to be (1.47 ± 0.03) X 10-13 cm3 molecule-1 s-1, and the temperature dependence of kII was determined to be (4.5±0.8)—10-12 exp[-(1030 ± 60)/T] cm3 molecule-1 s-1. The error quoted is 1s of the linear regression of the respective plots. The rate coefficient at room temperature is very close to the average of the three previous measurements, whereas the values of Ea/R and the A-factor are higher than the two previously reported values.

 
 
SIRD Digital E-Sangrahay