Process for electrolytic preparation of chlorites

Details Process for electrolytic preparation of chlorites Process for electrolytic preparation of chlorites

C - Chemistry, Metallurgy

25

B

204/62

C25B 1/26 (2006.01)

Patent

CA 1091186

ABSTRACT It is known to prepare chlorite from chlorate by using a chemical reducing agent. The reactants in the known processes are expensive while the by products of the reaction are not industrially important. Thus, the economics of the preparation of chlorite are not favourable. Furthermore, the reactants are generally chemicals which are difficult to handle. The present invention overcomes these drawbacks by providing a process for the preparation of chlorite from chlorate, characterized in that chlorate is reduced to chlorine dioxide in a reactor, that the chlorine dioxide and the residual solution from the reactor is introduced to an electrolytic cell comprising an anode, a cathode and a cation selective membrane positioned between the anode and the cathode for electrolytic reduction of the chlor- ine dioxide to chlorite.

278033

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