Abstract
The production of $$\hbox {H}_2\hbox {O}_2$$ in an atmospheric pressure RF glow discharge in helium-water vapor mixtures has been investigated as a function of plasma dissipated power, water concentration, gas flow (residence time) and power modulation of the plasma. $$\hbox {H}_2\hbox {O}_2$$ concentrations up to 8 ppm in the gas phase and a maximum energy efficiency of 0.12 g/kWh are found. The experimental results are compared with a previously reported global chemical kinetics model and a one dimensional (1D) fluid model to investigate the chemical processes involved in $$\hbox {H}_2\hbox {O}_2$$ production. An analytical balance of the main production and destruction mechanisms of $$\hbox {H}_2\hbox {O}_2$$ is made which is refined by a comparison of the experimental data with a previously published global kinetic model and a 1D fluid model. In addition, the experiments are used to validate and refine the computational models. Accuracies of both model and experiment are discussed.
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