The effect of Al concentration on thermodynamic properties of Nd and U in Ga–Al-based alloys and the separation factor of Nd/U couple in a “molten salt-liquid metal system”

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• 作者：Valeri Smolenski ; Alena Novoselova…
• 关键词：Uranium ; Neodymium ; Gallium–Aluminum alloys ; Molten salts ; Thermodynamic properties
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：311
• 期：1
• 页码：687-693
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1588-2780
• 卷排序：311

文摘

Electrochemical behavior of neodymium and uranium in a molten Nd(U)–(Ga–xAl)/3LiCl–2KCl system (x = 1.5; 5.0 and 20.0 wt% Al) between 723 and 823 K was studied. Temperature dependencies of apparent standard potentials of Nd–(Ga–Al) and U–(Ga–Al) alloys were determined versus Cl−/Cl₂ reference electrode. Neodymium and uranium activity coefficients and Nd/U separation factor were calculated. Partial excess free Gibbs energy, partial enthalpy of mixing and partial excess entropy of Nd–(Ga–Al) and U–(Ga–Al) alloys were estimated.