Solubilities of Uranium(IV) Dioxide in Magnesium Chloride, Calcium Chloride, and Aluminum Chloride Melts:  A Comparative Study

Solubilities of Uranium(IV) Dioxide in Magnesium Chloride, Calcium Chloride, and Aluminum Chloride Melts:  A Comparative Study

High-temperature near-IR absorption spectroscopy was used to study the dissolution of UO2 in molten MgCl2, CaCl2, and AlCl3 melts. The study reveals that UO2 is most soluble in molten AlCl3, followed by the melt of MgCl2. The solubility of UO2 in molten CaCl2 is too small to be measured with optical...

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Veröffentlicht in:Journal of Physical Chemistry 1996-01, Vol.100 (1), p.220-223
Hauptverfasser: Dai, Sheng, Toth, L. M, Del Cul, G. D, Metcalf, D. H
Format: Artikel
Sprache:eng
Schlagworte:
05 NUCLEAR FUELS
40 CHEMISTRY
ABSORPTION SPECTRA
ALUMINIUM CHLORIDES
CALCIUM CHLORIDES
DISSOLUTION
MAGNESIUM CHLORIDES
MATHEMATICAL MODELS
NUCLEAR FUELS
PROCESSING
SOLUBILITY
THERMODYNAMIC CYCLES
URANIUM DIOXIDE
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Zusammenfassung:High-temperature near-IR absorption spectroscopy was used to study the dissolution of UO2 in molten MgCl2, CaCl2, and AlCl3 melts. The study reveals that UO2 is most soluble in molten AlCl3, followed by the melt of MgCl2. The solubility of UO2 in molten CaCl2 is too small to be measured with optical spectroscopy. This strong dependence of the solubility on the cations of the melts was rationalized by the use of the Flood−Forland−Grjotheim thermodynamic cycle.
ISSN:0022-3654
1541-5740
DOI:10.1021/jp952100a