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The mechanism of ozone generation in the silent discharge of air-fed ozonisers is studied theoretically and experimentally. The nitrogen oxides (NOx) formed in the silent discharge have been found to play an important role in the process of ozone generation due to the catalytic cycle for O3 destruction: NO+O3 to NO2+O2 and NO2+O to NO+O2. Taking this catalytic cycle into account, a mechanism is proposed to explain the characteristics of ozone generation in air-fed ozonisers. The electron impact dissociation coefficients of O2, N2 and O3 and the gas temperature in the silent discharge are estimated by the computer matching of the theoretical calculations to experimental results.
Yagi et al. (Fri,) studied this question.