A Barrier Discharge Reactor with Ferroelectric Electrodes I. Influence of thickness and surface area of electrodes

Abstract

AbstractA study aimed at finding a way of scaling‐up a small laboratory reactor employing an electric discharge with a dielectric barrier was carried out. The dielectric used was ferroelectric ceramic material of a high permittivity (ϵ above 1000) comparing to glass (ϵ ≈︁ 3–10), which is generally used. The main component of the ceramics was BaTiO3. The advantage of using this type of ceramics is related to a considerable increase in power density without the need of increasing voltage which supplies the system.The influence of the thickness and surface of ferroelectric electrodes on the macroscopic characteristics of the discharge and efficiency of chemical process was investigated. Ozone synthesis from oxygen was the reaction under consideration.A new structure of the reactor was proposed comprising a series of parallelly spaced thin ceramic plates. High electric permittivity of the ferroelectric ceramics enables such „sandwich”︁ structure to be supplied by only two edge ceramic electrodes.