This paper reports the measurements of the rate coefficients and the activation energies of the electron capture processes with various chlorinated alkenes. The electron attachment processes in the mixtures of chlorinated alkenes with carbon dioxide have been investigated using a Pulsed Townsend technique. This study has been performed in the temperature range (298-378) K. The obtained rate coefficients more or less depended on temperature in accordance to Arrhenius equation. The activation energies (E-a's) were determined from the fit to the experimental data points with function In(k) = In(A)- E-a/k(B)T. The rate coefficients at 298 K were equal to 1.0 x 10(-10) cm(3) s(-1), 2.2 x 10(-11) cm(3) s(-1), 1.6 x 10(-9) CM3 s(-1), 4.4 x 10(-8) CM3 s(-1), 2.9 x 10(-12) CM3 s(-1) and 7.3 x 10(-12) CM3 s(-1) and activation energies were: 0.27 eV, 0.26 eV, 0.25 eV, 0.21 eV, 0.55 eV and 0.42 eV, for trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, trichloroethylene, tetrachloroethylene, 2-chloropropene, 3-chloropropene respectively. (C) 2016 Elsevier B.V. All rights reserved.