Electrochemical method for producing oxygen
AssigneeSociete Generale de Constructions Electriques et Mecaniques "Alsthom et Cie"
InventorsNicole Chillier-Duchatel, Bernard Verger
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Abstract
Method for preparing very pure oxygen, consisting in making air in a basic medium react with the reduced form of a compound so as to form a peroxide which is capable of decomposing spontaneously into hydrogen peroxide and into the oxidized form of the said compound, and electrochemically oxidizing said hydrogen peroxide to evolve oxygen, and reducing the said oxidized form to regenerate the reduced form of the said compound. The invention is implemented in the chemical industry.
Claims12
Electrochemical method for producing oxygen, comprising successively:
- reacting air in a basic medium with the reduced form of the anthraquinone 2-7 disulphonate of an alkali metal to form a peroxide which spontaneously decomposes into (i) hydrogen peroxide and (ii) the oxidised form of said anthraquinone;
- electrochemically oxidising said hydrogen peroxide to form oxygen;
- recovering said oxygen;
- electrochemically reducing said oxidised form of said anthraquinone to regenerate said reduced form of said anthraquinone;
- and
- recycling said reduced form, to react with said air.
Dependencies are inferred from the claim text.