Investigation of Zr(IV) in LiF–CaF2: Stability with oxide ions and electroreduction pathway on inert and reactive electrodes
Electrochemistry
0211 other engineering and technologies
0202 electrical engineering, electronic engineering, information engineering
Génie chimique
Zirconium
02 engineering and technology
Molten fluoride
Zirconium oxifluorides
Zr-Cu intermetallic compounds
DOI:
10.1016/j.electacta.2013.02.022
Publication Date:
2013-02-13T04:16:00Z
AUTHORS (5)
ABSTRACT
In this work, a detailed electrochemical study of the molten LiF-CaF2-ZrF4 system is provided in the 810-920°C temperature range, allowing the determination of the reduction potential, the diffusion coefficient and the reduction mechanism of dissolved Zr(IV) on an inert Ta electrode. Addition of CaO in the molten salt is shown to cause Zr(IV) precipitation into a mixture of solid compounds, most likely ZrO2 and ZrO1.3F1.4. Underpotential deposition of Zr on Cu and Ni electrodes is also evidenced.
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