Electrolytic process for the production of ozone

Details Electrolytic process for the production of ozone Electrolytic process for the production of ozone

C - Chemistry, Metallurgy

25

B

204/78.3

C25B 1/00 (2006.01)

Patent

CA 1170616

Improved Electrolytic Process for The Production of Ozone Abstract Very high yields of ozone are produced in an electrolytic process. As high as 52% current efficiencies are secured in electrolytic cells wherein the electrolyte is water and highly electronegative anions. Anions having a so-called "composite electronegativity" of 17.5 or higher, are utilized in the electrolyte-solution. The fluoro- anions and in particular, the hexafluoro-anions are especially preferred. The anion producing compounds may be added to the electrolyte either in the acid form or in the form of salts. Electrolysis is carried out at room temperatures or at lower temperatures, e.g. down to the freezing point of water. Preferred anode materials for use in the electrolytic cells are either platinum or lead dioxide, especially lead dioxide in the beta crystalline form. The platinum metals, carbon, or nickel and its alloys may be used as hydrogen- evolving cathodes. Alternately, an air or oxygen depolarized cathode may be employed which would greatly reduce the cell voltage and enhance the overall energy efficiency of the process. -28-

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