Fray Symposium - Thermodynamic properties of trivalent lanthanide and actinide ions in alkali chloride and alkaline earth chloride mixtures
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2011-Sustainable Industrial Processing Summit
SIPS2011 Volume 3: Molten Salts & Ionic Liquids 2011

Editors:Florian K
Publisher:Flogen Star OUTREACH
Publication Year:2012
Pages:630 pages
ISBN:978-0-9879917-2-0
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)

    Thermodynamic properties of trivalent lanthanide and actinide ions in alkali chloride and alkaline earth chloride mixtures

    Toshiyuki Fujii1; Akihiro Uehara1; Kazuhito Fukasawa1; Takeshi Uda1; Takayuki Nagai2; Nobuaki Sato3; Hajimu Yamana1;
    1KYOTO UNIVERSITY, Osaka, Japan; 2JAPAN ATOMIC ENERGY AGENCY, Ibaraki, Japan; 3TOHOKU UNIVERSITY, Sendai, Japan;
    Type of Paper: Regular
    Id Paper: 550
    Topic: 6

    Abstract:

    Chemical characteristics of trivalent lanthanides (Ln) and actinides (An) in molten chlorides were studied by UV/Vis/NIR spectrophotometry and electrochemical methods. Various mixtures of alkali chlorides and alkaline earth chlorides were chosen as solvent media. We focused on the structural property of LnCl63- and AnCl63- in chloride melts. Spectroscopic and electrochemical properties were strongly correlated with each other. The highly symmetric octahedral coordination was confirmed in the NaCl-2CsCl eutectic. The symmetry was found to be distorted by adding solvent cations with strong polarizing power like Li+.

    Keywords:

    absorption spectrophotometry, cyclic voltammetry, lanthanide, actinide, chloride melt

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    Cite this article as:

    Fujii T, Uehara A, Fukasawa K, Uda T, Nagai T, Sato N, Yamana H. Thermodynamic properties of trivalent lanthanide and actinide ions in alkali chloride and alkaline earth chloride mixtures. In: Florian K, editors. Sustainable Industrial Processing Summit SIPS2011 Volume 3: Molten Salts & Ionic Liquids 2011. Volume 3. Montreal(Canada): FLOGEN Star Outreach;2012. p..