Contribution of the Spatio-temporal Evolution of Reduced Electric Field on the Conversion of Nitrogen Oxides

In this paper, we proposed to numerically simulate the spatiotemporal evolution of the density of certain nitrogen oxides present in the gaseous mixture (74% N₂, 10% O_2, 8% H₂O, and 8% CO₂), which is subject to a crown discharge DC. We were interested in studying the influence of the reduced electric field E/N (E electric field, N the density of the neutrals) on the chemical kinetics of this mixture. The gas chemistry takes into account 17 species (the radicals N, O, H, OH, the ground state molecules N₂, O₂, H₂O, CO₂, O₃, H₂, HNO₃, the nitrogen oxides NO, N₂O, NO₂, NO₃, N₂O₅, metastable species N(²D), and the electrons e⁻) reacting with one another 80 selected chemical reactions. The obtained results show an evolution closely related to the reduced electric field.