Reaction Kinetics and Chemical Quasi-Equilibria of the Ozone Synthesis in Oxygen DC Discharges
✍ Scribed by H. Jacobs; F. Miethke; A. Rutscher; H.-E. Wagner
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 755 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0005-8025
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✦ Synopsis
The spatial distribution of ozone and of oxygen atoms was studied along the active and the passive zone of a dc discharge (positive column, pressure: p = ( 4 . . .lo) . 10' Pa, current: I = 2 . . .50 mA, flow rate: F = 5 . . .lo0 sccm) in flowing oxygen. The composition of the final output 02/03-mixture is controlled by relaxation processes in the passive reactor zone. It is affected sensitively by the total number density and the gas temperature in the afterglow. Steady states meaning reversible chemical qua+-equilibria were observed and analysed extensively. Within a detailed kinetic model the formation of these equilibria can be explained quantitatively. The synthesis to ozone is controlled above all by the metastable O2 (a'd,) species, which modify drastically the results for the basic mechanism, considering the Oatoms in the 3 P and 'D states.