Electrochemical separation of Gadolinium from variable valence europium in molten LiCl-KCl via liquid LBE alloy electrode

Li, Zhuyao; Zhu, Liandi; Liu, Hui; Lin, Yi Chun; Tang, Dandan; Zhou, Limin; Dai, Ying; Gao, Zhengming; He, Feiqiang; Guo, Kai; Yu, Neng; Liu, Zhongfan

doi:10.1016/j.seppur.2023.123477

Cited by 9 publications

(2 citation statements)

References 48 publications

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“…64 The separation coefficient of Gd and Eu is up to 759 and the extraction efficiency of Gd is up to 99.1%. 65 The separation of uranium from lanthanides (La, Ce, Pr, Nd, and Sm) by pulse electrolysis was much more efficient than constant current and constant potential electrolysis. 66 Comparing to pulse, constant current and constant potential electrolysis, it was found that pulse electrolysis has the best effect on U separation (Fig.…”

Section: Process Parameters and Coating Propertiesmentioning

confidence: 99%

Review—Pulse-Electrolysis Protocols in High Temperature Molten Salt Electrochemistry

Liu,

Jiao,

Yuan

et al. 2023

J. Electrochem. Soc.

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High temperature molten salt electrochemistry (MSE) plays a crucial role in the fields of metallurgy, materials, chemical industry and many other important areas. However, the traditional constant potential or constant current electrolysis has low current efficiency and poor product performance, so researchers often use pulse-electrolysis strategy to address this challenge. In this review, we present a discussion on the application of pulse technology in high temperature MSE. Then, we clarify the influence of key factors in the pulse electrolysis process and the internal mechanism of the influence is analyzed. Finally, we conclude with a perspective on the challenges and development directions of pulse electrolysis in high temperature MSE.

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Section: Process Parameters and Coating Propertiesmentioning

confidence: 99%

Review—Pulse-Electrolysis Protocols in High Temperature Molten Salt Electrochemistry

Liu,

Jiao,

Yuan

et al. 2023

J. Electrochem. Soc.

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“…It is well known that the binary chloride system is highly soluble and stable for lanthanide (Ln) fission products and actinides (An), and therefore it has been widely used in the pyrochemical process. − Previously, the electrochemical behaviors of Ln/An elements on Al, Ga, Zn, Bi, and other electrode materials have been studied extensively in order to improve the separation efficiency of Ln/An in binary chloride salts. − Additionally, chemical properties of Ln and An ions such as the diffusion coefficients, exchange current densities, activity coefficients, and Gibbs free energy changes corresponding to the formation of intermetallic compounds can be obtained. − …”

Section: Introductionmentioning

confidence: 99%

Electrochemical Behaviors and Extraction of Ln(III) (Ln = La, Ce, Nd) Ions in LiCl–KCl–CsCl Eutectic Salts at Low Temperatures

Liu

Wang

Jiang

et al. 2023

ACS Sustainable Chem. Eng.

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The LiCl–KCl–CsCl eutectic salt is expected to be used as a melt medium for the pyrochemical process of spent fuels because of its low melting point properties that reduce the temperature resistance requirements of the equipment. In this work, the electrochemical behaviors of La(III), Ce(III), and Nd(III) ions in the LiCl–KCl–CsCl eutectic salt in the range of 563–683 K were investigated, and it was found that the difficulty of cathodic passivation was in the order of La(III) < Ce(III) < Nd(III). Cyclic voltammetry (CV) and chronopotentiometry (CP) methods were conducted to determine the diffusion coefficients of La(III), Ce(III), and Nd(III). The corresponding diffusion activation energies were also calculated. It was also found that the passivation phenomenon does not affect the equilibrium potentials of La(III), Ce(III), and Nd(III), so we determined the apparent electrode potentials of La(III) and Ce (III) in the range of 563–683 K and Nd(III) in the range of 623–683 K by the galvanostatic voltammetry (GV) method. Finally, Ce and Nd metals were successfully extracted by potentiostatic electrolysis at 563 K for 4 h.

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Metal directional crystallization: A sustainable green separation method for the purification of bismuth from crude bismuth while enriching lead and silver

Zhang,

Li,

Zhang

et al. 2024

Chemical Engineering Journal

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Electrochemical separation of Gadolinium from variable valence europium in molten LiCl-KCl via liquid LBE alloy electrode

Cited by 9 publications

References 48 publications

Review—Pulse-Electrolysis Protocols in High Temperature Molten Salt Electrochemistry

Review—Pulse-Electrolysis Protocols in High Temperature Molten Salt Electrochemistry

Electrochemical Behaviors and Extraction of Ln(III) (Ln = La, Ce, Nd) Ions in LiCl–KCl–CsCl Eutectic Salts at Low Temperatures

Metal directional crystallization: A sustainable green separation method for the purification of bismuth from crude bismuth while enriching lead and silver

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