Electrolytic process for the production of ozone

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

1980-05-29

1982-02-23

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25B 100, C25B 104

Patent

active

043167829

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 fluoroanions 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 maybe used as hydrogen-evolving cathodes. Alternately, an air or oxygen deploarized cathode may be employed which would greatly reduce the cell voltage and enhance the overall energy efficiency of the process.

REFERENCES:
patent: 3256164 (1966-06-01), Donohue et al.
patent: 3623970 (1969-01-01), Haas
patent: 3947334 (1976-03-01), Yamanouchi
patent: 4048029 (1971-09-01), Seitzer
patent: 4107008 (1978-08-01), Horvath
patent: 4131514 (1978-12-01), Chong et al.
patent: 4135995 (1979-01-01), Welch
The Evolution of Ozone at Lead Dioxide Anodes; Master's Thesis-Peter C. Foller.

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