ELECTROCHEMICAL PRODUCTION OF NEW URANIUM OXIDE PHASES

Authors
SMOLENSKII VV LYALYUSHKIN NV BOVE AL KOMAROV VK KAPSHUKOV II
Citation
Vv. Smolenskii et al., ELECTROCHEMICAL PRODUCTION OF NEW URANIUM OXIDE PHASES, Soviet radiochemistry, 34(6), 1992, pp. 643-647
Citations number
14
Journal title
Soviet radiochemistry → ACNP
ISSN journal
0038576X
Volume
34
Issue
6
Year of publication
1992
Pages
643 - 647
Database
ISI
SICI code
0038-576X(1992)34:6<643:EPONUO>2.0.ZU;2-5
Abstract
The behavior of U3+ and U4+ in alkali-metal chloride melts is studied by cyclic voltammetry in the range 700-900-degrees-C under an inert at mosphere. The ions UO+ and UO2+ form on addition to the salt melt of c rystalline UO2. These ions are electroactive and form UO and presumabl y U3O4 at the cathode. The cathodic product is studied by x-ray diffra ction and gas coulometry. The oxides UO and U3O4 are found to be therm odynamically unstable at low temperatures. They decompose to substoich iometric UO2-x, where x varies.from 0 to 0.05, and metallic U.