Electrochemical transient techniques for determination of uranium and rare-earth metal separation coefficients in molten salts
Kuznetsov, S. A.*; 林 博和; 湊 和生; Gaune-Escard, M.*
Kuznetsov, S. A.*; Hayashi, Hirokazu; Minato, Kazuo; Gaune-Escard, M.*
Electrochemical experiments were carried out at 723-823K in order to estimate separation coefficients in LiCl-KCl eutectic melt containing uranium and lanthanum trichlorides. The diffusion coefficients of U(III) were determined by electrochemical methods. The standard rate constants of charge transfer for electroreduction of uranium U(III) +3e$$^-$$=U were calculated by the impedance spectroscopy method. It was shown that for the calculation of uranium and lanthanum separation coefficients it is necessary to determine the voltammetric peak potentials of U(III) and La(III), their concentration in the melt and the kinetic parameters relating to U(III) discharge such as transfer and diffusion coefficients, and standard rate constants of charge transfer.
使用言語 : English
掲載資料名 : Electrochimica Acta
: 51
: 13
ページ数 : p.2463 - 2470
発行年月 : 2006/03
出版社名 : Elsevier
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登録番号 : AA20050064
抄録集掲載番号 : 34000552
論文投稿番号 : 675
Accesses  (From Jun. 2, 2014)
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