Author/Authors :
Aranda، نويسنده , , Alfonso and Mera، نويسنده , , Yolanda D??az de and Rodr??guez، نويسنده , , Diana Habel-Rodriguez، نويسنده , , Ana and Caba?as، نويسنده , , Beatriz Pardo Martinez، نويسنده , , Ernesto، نويسنده ,
Abstract :
The kinetics and mechanism of the reaction of chlorine atoms with acrylonitrile (CH2CHCN) (1) have been studied by the mass spectrometric discharge-flow method in the temperature range (260–333) K and at a total pressure between 0.5 and 3 Torr. At 1.0 Torr the following Arrhenius expression for the rate constant has been obtained from the kinetics of Cl radical consumption in excess of CH2CHCN: k1=(5.2±1.6)×10−14exp[(1400±100/T)] cm3 molecule−1 s−1. The reaction is found to proceed through an addition mechanism involving a relatively stable adduct. The atmospheric significance of the present results for acrylonitrile is also discussed.
