Effect of melt composition on the reaction of uranium dioxide with hydrogen chloride in molten alkali chlorides
- Volkovich, V. A.
- Polovov, I. B.
- Vasin, B. D.
- Griffiths, T. R.
- Sharrad, C. A.
- May, I.
- Charnock, J. M.
Publication date
January 2007
DOI Publisher
Walter de Gruyter GmbH Journal
Zeitschrift für Naturforschung A Language
EnglishAbstract
The reaction of uranium dioxide with excess hydrogen chloride in alkali chloride melts (LiCl, 3LiCl-2KCl, NaCl-KCl and NaCl-2CsCl) has been studied between 450 and 750°C, and the reaction products were characterized by electronic absorption and X-ray absorption spectroscopy. Uranium(V), [UO 2Cl4]3-, and uranium(IV), [UCl 6]2-, species were formed. They depended upon the temperature and the radius of the alkali cations present. Uranium(V) ions predominated in melts with small cations (LiCl and 3LiCl-2KCl). © 2007 Verlag der Zeitschrift für Naturforschung
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