PREPARATION OF URANIUM DIOXIDE BY ELECTROCHEMICAL REDUCTION OF URANIUM(VI) TO URANIUM(IV) IN CARBONATE SOLUTIONS AND SUBSEQUENT PRECIPITATION. I. THE ELECTROLYSIS OF URANIUM(VI) IN SODIUM CARBONATE SOLUTIONS
Conditions were investigated for the electrochemical reduction of uranium(VI) to uranium(IV) in sodium carbonatebicarbonate solutions at mercury and platinum cathodes in a cell with cation exchange membranes separating cathode and anode compartments. A current density plateau was found only for the mercury cathode, in the potential range between --1.20 and --1.85 v vs SCE, which permits specific reduction of uranium(VI) with current efficiencies of over 80%. The reduction was performed so that no precipitation occurred in the electrolysis cell itself, the precipitation of uranium dioxide being carried out in a separate vessel. The possibilities of a large-scale process used based on the experimental work are discussed. (Uran. Abstr., 3: No. 2, Jan. 1964)
- Research Organization:
- Institut Rudjer Boskovic, Zagreb
- NSA Number:
- NSA-18-010060
- OSTI ID:
- 4084376
- Journal Information:
- Electrochemical Technology (U.S.) Absorbed by J. Electrochem. Soc., Vol. Vol: 1; Other Information: Orig. Receipt Date: 31-DEC-64
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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