Thermodynamic parameters of Am(III), Cm(III) and Eu(III) extraction by CyMe4-BTPhen in cyclohexanone from HNO3 solutions

被引：13
作者：
Distler, Petr [1 ]
Stamberg, Karel [1 ]
John, Jan [1 ]
Harwood, Laurence M. [2 ]
Lewis, Frank W. [3 ]
机构：
[1] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Dept Nucl Chem, Brehova 7, Prague 11519 1, Czech Republic
[2] Univ Reading, Dept Chem, Reading RG6 6AD, Berks, England
[3] Northumbria Univ, Fac Hlth & Life Sci, Dept Appl Sci, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2020年 / 141卷
基金：
英国工程与自然科学研究理事会; 欧盟地平线“2020”;
关键词：
Liquid-liquid extraction; CyMe4-BTPhen; Am(III); Cm(III); Eu(III); Activation energy; Enthalpy; Entropy; SOLID-LIQUID EXTRACTION; ACTINIDES; SEPARATION; EUROPIUM(III); COMPLEXATION; LANTHANIDES; DILUENTS; SOLVENTS; KINETICS; LIGANDS;
D O I：
10.1016/j.jct.2019.105955
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The thermodynamic parameters of the extraction system consisting of CyMe4 -BTPhen dissolved in cyclohexanone and Am(III), Cm(III) and Eu(III) in HNO3 in the aqueous phase have been determined. Kinetic extraction experiments were carried out under various temperatures (15-45 degrees C) and the corresponding over-all mass transfer coefficients were used for the calculation of apparent activation energy and frequency factor values. The values of reaction enthalpy and entropy were also calculated using the distribution coefficients resulting from the experiments mentioned above. Based on the calculated data, the rate-controlling processes and the exothermic character of the studied extractions were determined. (C) 2019 Elsevier Ltd.
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页数：8
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