Mechanism of ozone generation in air-fed ozonisers

Abstract

The mechanism of ozone generation in the silent discharge of air-fed ozonisers is studied theoretically and experimentally. The nitrogen oxides (NO_x) 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.