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David Lambertin, Sylvie Sanchez, Gérard S. Picard, Jérome Lacquement

Temperature dependence and effect of oxide anion on the americium chemistry in the molten LiCl-KCl eutectic

The chemical properties of americium chlorides have been studied in the fused eutectic LiCl-KCl as a function of temperature ranging from 743K to 943K. Titration of Am(III) chlorocomplex by O^2- demonstrated the existence of soluble AmO⁺ species as well as the precipitation of AmOCl and Am₂O₃ solid compounds. The corresponding solubility products of AmOCl and Am₂O₃ have been determined. Calculated Am(II) disproportionation equilibrium constant indicates that the stability of Am(II) chlorocomplex increases with the increase of temperature.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 91, 08/2003
Pages: 449

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