METHOD OF PRODUCING CERIUM (IV) NITRATE BY ELECTROCHEMICAL OXIDATION OF CERIUM (III) NITRATE Russian patent published in 2016 - IPC C25B1/00 C01F17/00 C25B9/08 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing cerium nitrate(IV) electrochemical oxidation of cerium nitrate(III) in the anode chamber containing solution with initial concentration of cerium nitrate(III) 100-130 g/l and initial concentration of free nitric acid in an anolyte and catholyte 8-12 g/l, at current density on platinized niobic anode 1-3 A/dm². Method is characterised by that in order to increase stability of platinum coating electrolysis process is carried out in anode chamber-chamber electrolysis cell, separated from two cathode chambers anion and cation-exchange membranes, which in anode chamber is maintained constant concentration of free nitric acid 8-12 g/l.

EFFECT: using the presented method allows to prevent accumulation of free nitric acid in an anode, which is necessary to provide stability of platinized niobium anode.

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