Chemical reaction kinetics in the afterglow of electrical discharges in hydrogen-oxygen systems (H2 + O2, H2O2, H2O) and in the mixture H2 + CO2

Abstract

Mathematical modeling of chemical reaction kinetics in the afterglow of electrical discharges in gas mixtures 66.7% H2 + 33.3% O2, 3% H2 + 97% O2, and 75% H2 + 25% CO2 and in vapors of H2O2 and H2O has been performed. The model included 50 chemical reactions for hydrogen-oxygen systems and 82 reactions for H2 + CO2 gas mixture. The reactions of heterogeneous loss of active particles were also included in the model. For every system investigated, a minimal set of significant chemical reactions was constructed sufficient for adequate description of experimental results. The concentration of particles not detected in experiment was estimated. The initial gas-phase particles were revealed for the synthesis of peroxy-radical condensates in hydrogen-oxygen systems and formic acid from the mixture H2 + CO2.