Thermodynamic properties of trivalent lanthanide and actinide ions in molten mixtures of LiCl and KCl

Kazuhito Fukasawa, Akihiro Uehara, Takayuki Nagai, Nobuaki Sato, Toshiyuki Fujii, Hajimu Yamana

研究成果: Article査読

33 被引用数 (Scopus)

抄録

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 U 3+/U 0 redox reactions, ΔG3/0′, was investigated under various mole fraction of KCl, χ K = 0-0.65. In general, ΔG3/0′ increased linearly with the decrease of χ K due to the distortion of octahedral symmetry of LnCl63- and UCl63-, but a few exceptions were found for lighter Ln elements, e.g., La and Ce, at smaller χ K of 0-0.2. The discrepancy suggests an increase of the number of Cl - ions around La 3+ and Ce 3+.

本文言語English
ページ(範囲)17-22
ページ数6
ジャーナルJournal of Nuclear Materials
424
1-3
DOI
出版ステータスPublished - 2012 5

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 材料科学(全般)
  • 原子力エネルギーおよび原子力工学

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