Massot, Laurent
and Chamelot, Pierre and Cassayre, Laurent and Taxil, Pierre
Electrochemical study of the Eu(III)/Eu(II) system in molten
fluoride media.
(2009)
Electrochimica Acta, 54 (26). 6361-6366. ISSN 0013-4686
|
(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 384kB |
Official URL: http://dx.doi.org/10.1016/j.electacta.2009.06.016
Abstract
The electrochemical behaviour of the Eu(III)/Eu(II) system was examined in the molten eutectic LiF-CaF2 on a molybdenum electrode, using cyclic voltammetry, square-wave voltammetry and chronopotentiometry. It was observed that EuF3 is partly reduced into EuF2 at the operating temperatures (1073-1143 K). The electrochemical study allowed to calculate both the equilibrium constant and the formal standard potential of the Eu(III)/Eu(II) system. The reaction is limited by the diffusion of the species in the solution; their diffusion coefficients were calculated at different temperatures and the values obey Arrhenius' law. The second system Eu(II)/Eu takes place out of the electrochemical window on an inert molybdenum electrode, which inhibits the extraction of Eu species from the salt on such a substrate.
| Item Type: | Article |
|---|---|
| Additional Information: | Thanks to Elsevier, the original version of this article is available at Electrochimica Acta website : http://www.sciencedirect.com/science/journal/00134686 |
| Audience (journal): | International peer-reviewed journal |
| Uncontrolled Keywords: | |
| Institution: | Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) |
| Laboratory name: | Laboratoire de Génie Chimique - LGC (Toulouse, France) - Procédés électrochimiques (PE) |
| Statistics: | download |
| Deposited On: | 20 Oct 2009 13:22 |
Repository Staff Only: item control page
