Electrochemical cogeneration of alkali metal halate and alkaline

Details Electrochemical cogeneration of alkali metal halate and alkaline Electrochemical cogeneration of alkali metal halate and alkaline

1990-08-08

1991-12-24

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204 83, 204 95, C25B 124, C25B 130

Patent

active

050749757

ABSTRACT:
This invention relates to a process and apparatus for the electrosynthesis of oxygenated halogen salts of alkali metals such as alkali metal halate, alkali metal hypohalite and alkali metal perhalate and an alkaline solution of hydrogen peroxide in the same electrochemical reactor. The invention also relates to a method for oxygen depolarization of cathodes in reactors that are used for the electrosynthesis of oxygenated halogen salts of alkali metals. The invention also relates to a method for the electrosynthesis of oxygenated chlorine salts of alkali metals which avoids the need to use chromates that are used in conventional chlorate production for the suppression of the cathodic reduction of hypochlorite.

REFERENCES:
patent: 2000815 (1935-05-01), Berl
patent: 3454477 (1969-07-01), Grangaard
patent: 3681213 (1972-04-01), Heit et al.
patent: 3884777 (1975-05-01), Harke et al.
patent: 3969201 (1976-07-01), Oloman et al.
patent: 4067787 (1978-01-01), Kastening et al.
patent: 4118305 (1978-10-01), Oloman et al.
patent: 4406758 (1983-09-01), McIntyre et al.
J. E. Colman, "Electrolytic production of sodium chlorate", AIChE Symposium 204, vol. 77, 1981, pp. 244-263.
E. Berl, "A new cathodic process for the production of H.sub.2 O.sub.2 ", Seventy-sixth General meeting , N.Y., N.Y., Sep. 11, 1938, H. S. Lukens presiding.

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