Title of article :
Thermodynamic properties of trivalent lanthanide and actinide ions in molten mixtures of LiCl and KCl
Author/Authors :
Fukasawa، نويسنده , , Kazuhito and Uehara، نويسنده , , Akihiro and Nagai، نويسنده , , Takayuki and Sato، نويسنده , , Nobuaki and Fujii، نويسنده , , Toshiyuki and Yamana، نويسنده , , Hajimu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Abstract :
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 Ln3+/Ln0 and U3+/U0 redox reactions, Δ G 3 / 0 ∘ ′ , was investigated under various mole fraction of KCl, χK = 0–0.65. In general, Δ G 3 / 0 ∘ ′ increased linearly with the decrease of χK due to the distortion of octahedral symmetry of LnCl 6 3 - and UCl 6 3 - , but a few exceptions were found for lighter Ln elements, e.g., La and Ce, at smaller χK of 0–0.2. The discrepancy suggests an increase of the number of Cl− ions around La3+ and Ce3+.
Journal title :
Journal of Nuclear Materials
Journal title :
Journal of Nuclear Materials