2012年5月
Thermodynamic properties of trivalent lanthanide and actinide ions in molten mixtures of LiCl and KCl
JOURNAL OF NUCLEAR MATERIALS
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- 巻
- 424
- 号
- 1-3
- 開始ページ
- 17
- 終了ページ
- 22
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jnucmat.2012.01.009
- 出版者・発行元
- ELSEVIER SCIENCE BV
The thermodynamic stability of Ln(III) (Ln: La, Ce, Pr, Tb, and Er) and U(III) complexes in LiCl-KCl system at 923 K was studied by electrochemical techniques. The Gibbs free energy change of the Ln(3+)/Ln(0) and U3+/U-0 redox reactions, Delta G(3/0)(o)', was investigated under various mole fraction of KCl, chi(K) = 0-0.65. In general, Delta G(3/0)(o)' increased linearly with the decrease of chi(K) due to the distortion of octahedral symmetry of LnCl(6)(3-) and UCl63-, but a few exceptions were found for lighter Ln elements, e.g., La and Ce, at smaller chi(K) of 0-0.2. The discrepancy suggests an increase of the number of Cl- ions around La3+ and Ce3+. (C) 2012 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jnucmat.2012.01.009
- ISSN : 0022-3115
- Web of Science ID : WOS:000304842800003