Process for the production of alkali metal-and ammonium...

Details Process for the production of alkali metal-and ammonium... Process for the production of alkali metal-and ammonium...

C - Chemistry, Metallurgy

25

B

C25B 1/28 (2006.01)

Patent

CA 2344499

The invention relates to a process for the production of a peroxodisulfate, such as ammonium-, sodium- and potassium peroxodisulfate by anodic oxidation of an electrolyte containing a sulfate and/or hydrogen sulfate. The disadvantages of the conventional platinum anodes used for this hitherto can be avoided by using as the anode a diamond film mounted on a conductive carrier and made conductive by doping with a tri- or pentavalent element and by not adding a promoter to the anolyte.

Divulgation d'un procédé de production de peroxodisulfate, p. ex. d'ammonium, de sodium ou de potassium, par oxydation anodique d'un électrolyte contenant un sulfate et/ou un hydrogénosulfate. Les désavantages des anodes classiques au platine utilisées jusqu'à maintenant peuvent être évités en employant comme anode un film en diamant monté sur un support conducteur qu'on rend conducteur par dopage avec un élément tri- ou pentavalent et en n'ajoutant pas de promoteur dans l'anolyte.

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