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.
1 cl, 2 tbl, 2 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD OF PRODUCING CERIUM NITRATE (IV) | 2015 |
|
RU2603642C1 |
METHOD OF ELECTROCHEMICAL OXIDATION OF CERIUM | 2016 |
|
RU2623542C1 |
METHOD OF OBTAINING CERIUM DIOXIDE | 2007 |
|
RU2341459C1 |
METHOD OF REGENERATING CHROMATE SOLUTIONS OF PASSIVATING | 2018 |
|
RU2691791C1 |
METHOD FOR ELECTRIC MEMBRANE REGENERATION OF SOLUTION FOR REMOVAL OF CADMIUM COATINGS AND DEVICE THEREFOR | 2015 |
|
RU2603522C2 |
METHOD OF ELECTRIC OXIDATION OF CERIUM IONS (III) | 2018 |
|
RU2673809C1 |
METHOD FOR ELECTROCHEMICAL PRODUCTION OF SILVER NITRATE AND SODIUM HYDROXIDE | 2004 |
|
RU2252979C1 |
METHOD OF REGENERATING SOLUTION FROM BLACK CHROMATING OF ZINC COATS | 2011 |
|
RU2481424C2 |
METHOD OF ELECTROCHEMICAL REGENERATION OF CUPRO-AMMONIUM PICKLING SOLUTION | 2016 |
|
RU2620228C1 |
METHOD FOR REGENERATION OF COPPER PASSIVATION SOLUTION AND DEVICE FOR ITS IMPLEMENTATION | 2021 |
|
RU2764583C1 |
Authors
Dates
2016-03-27—Published
2015-04-27—Filed