Distribution of actinides and lanthanides in a molten fluoride/liquid aluminum alloy system

被引：35

作者：

Conocar, O ^{[1
]}

Douyère, N ^{[1
]}

Lacquement, J ^{[1
]}

机构：

[1] CEA, DEN, DRCP, SCPS,LPP, F-30207 Bagnols Sur Ceze, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 389卷 / 1-2期

关键词：

pyrochemistry; molten salt; actinides; lanthanides; Generation IV;

D O I：

10.1016/j.jallcom.2004.07.040

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

As one of the basic investigations on the group partitioning of actinides and lanthanides by a pyrochemical reductive extraction process, the distribution ratios of Pu, Am, Ce and Sm have been experimentally determined in the binary liquid LiF-AlF3/Al-Cu system at the temperature of 830degreesC. The distribution ratios of Pu and Am are much larger than those of Cc and Sm. They would allow a high recovery yield of the actinides and good separation factors from lanthanides. The influence of the salt composition (LiF/AlF3 ratio) on the distribution coefficients has been studied. Coupling the obtained experimental results and literature data, a thermodynamic model that describes the extraction in terms of Gibbs enthalpies of formation and the fluoroacidity of the melt has been developed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：29 / 33

页数：5

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