Physico-Chemical Investigation of Pulsed Discharge in CO2/O2 Gas Mixture

Abstract

In this research, the decomposition of CO₂ in CO₂/O₂ pulsed discharge was studied. The developed model is based on the physical processes involved in the discharge with the CO₂ plasma chemistry, the electrical circuit, and the Boltzmann equations. The fundamental chemistry of CO₂/O₂ gas mixture used in this work is based on a full set of processes regrouped in 113 reactions involving 21 species of the discharge. The obtained numerical results show the temporal variations of electrical parameters and species concentrations of the discharge. We have also studied the effect of some discharge parameters (gas pressure, dielectric capacitance, applied voltage, concentration of O₂ in CO₂/O₂ gas mixture, and frequency) on the discharge behavior.