Electrochemistry of uranium in LiF–BeF2 melt

Straka, M.; Korenko, Michal; Lisý, F.

doi:10.1007/s10967-010-0478-8

Cited by 42 publications

(32 citation statements)

References 54 publications

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“…15 In a word, the electrochemical method is rarely adopted in the existing fuel reprocessing flowsheets proposed for the FLiBe based fuel of MSR. 5,6,16,17 In this study, a new idea about the employment of electrochemical method in the MSR fuel processing is proposed: first the U 4+ is converted into UO 2 2+ ; then UO 2 2+ is electrochemically reduced to UO 2 and separated from the melt.…”

Section: +mentioning

confidence: 99%

Electrochemical Behavior of UO₂F₂and Its Electrodeposition from UO₂F₂-FLiNaK Melt

Han

She

Jia

et al. 2018

J. Electrochem. Soc.

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The electrochemical behavior of UO 2 F 2 in LiF-NaF-KF (46.5-11.5-42 mol%, FLiNaK) melt on Pt electrode was investigated at 550 • C by cyclic voltammetry (CV) and square wave voltammetry (SWV). UO 2 F 2 was prepared by the reaction of UF 4 powder and oxygen at 650 • C, and ascertained by X-ray diffraction (XRD) and Raman spectroscopy. It was found that the reduction of UO 2 2+ in FLiNaK exhibited two steps both with one exchanged electron: UO 2 2+ + e − → UO 2 + and UO 2 + + e − → UO 2 , with the CV reduction peak at about 2.02 V and 1.49 V (vs. K + /K), respectively. Both of them were reversible and diffusion-controlled. By means of potentiostatic electrolysis, the product of UO 2 was obtained and the separation ratio of uranium from UO 2 F 2 -FLiNaK melt was approximately 54.5% at 550 • C, which were characterized by XRD and the inductively coupled plasma atomic emission spectrometer (ICP-AES).

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confidence: 99%

Electrochemical Behavior of UO₂F₂and Its Electrodeposition from UO₂F₂-FLiNaK Melt

Han

She

Jia

et al. 2018

J. Electrochem. Soc.

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“…), molten fluorides and properties of actinides in those media have not been extensively investigated. In fact only a limited number of studies has been published about electrochemistry of actinides in molten fluorides [6][7][8][9][10][11][12].…”

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confidence: 99%

Electrochemistry of uranium in molten LiF–CaF2

Nourry¹,

Souček²,

Massot

et al. 2012

Journal of Nuclear Materials

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a b s t r a c tThis article is focused on the electrochemical behaviour of U ions in molten LiF-CaF 2 (79-21 wt.%) eutectic. On a W electrode, U(III) is reduced in one step to U metal and U(III) can be also oxidised to U(IV). Both systems were studied by cyclic and square wave voltammetry. Reversibility of both systems for both techniques was verified and number of exchanged electrons was determined, as well as diffusion coefficients for U(III) and U(IV). The results are in a good agreement with previous studies. On a Ni electrode, the depolarisation effect due to intermetallic compounds formation was observed. Electrorefining of U metal in a melt containing U and Gd ions was carried out using a reactive Ni electrode with promising results.

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“…B/B' redox system: The sharp oxidation peak B' and the ratios of |ip B' /ip B |>1 imply the couple B/B' may be attributed to the deposition and dissolution of Fe [25,26]. Since the peak potential Ep B remains at about 1.42 V (vs. alkalis) and the cathodic peak current density ip B linearly increases with v 1/2 as shown in Figure 4b, the reduction peak B is a quasi-reversible reaction controlled by ion diffusion.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Investigation on the Stable Iron Species in Molten FLINAK

Peng¹,

Miao²

2016

Insights Anal Electrochem

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Electrochemistry of uranium in LiF–BeF2 melt

Cited by 42 publications

References 54 publications

Electrochemical Behavior of UO₂F₂and Its Electrodeposition from UO₂F₂-FLiNaK Melt

Electrochemical Behavior of UO₂F₂and Its Electrodeposition from UO₂F₂-FLiNaK Melt

Electrochemistry of uranium in molten LiF–CaF2

Electrochemical Investigation on the Stable Iron Species in Molten FLINAK

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Electrochemistry of uranium in LiF–BeF2 melt

Cited by 42 publications

References 54 publications

Electrochemical Behavior of UO2F2and Its Electrodeposition from UO2F2-FLiNaK Melt

Electrochemical Behavior of UO2F2and Its Electrodeposition from UO2F2-FLiNaK Melt

Electrochemistry of uranium in molten LiF–CaF2

Electrochemical Investigation on the Stable Iron Species in Molten FLINAK

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Electrochemical Behavior of UO₂F₂and Its Electrodeposition from UO₂F₂-FLiNaK Melt

Electrochemical Behavior of UO₂F₂and Its Electrodeposition from UO₂F₂-FLiNaK Melt