Chamelot, Pierre and Massot, Laurent
and Cassayre, Laurent
and Taxil, Pierre
Electrochemical behaviour of thorium(IV) in molten LiF–CaF2 medium on inert and reactive electrodes.
(2010)
Electrochimica Acta, 55 (16). 4758-4764. ISSN 0013-4686
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 377kB |
Official URL: http://dx.doi.org/10.1016/J.ELECTACTA.2010.03.073
Abstract
The electrochemicalbehaviour of the Th(IV)/Th system was examined in moltenLiF–CaF2medium on inert (molybdenum), reactive (nickel) and liquid (bismuth) electrodes in the 810–920 °C temperature range by several electrochemical techniques. Experimental results showed that (i) thorium fluoride was reduced in a single step exchanging 4 electrons and limited by thorium ions diffusion in the solution, (ii) the oxide ions induce the precipitation of Th(IV) in the form of thorium oxide (ThO2), in a process involving as intermediate compound a soluble oxifluoride (ThOF2), (iii) the reduction of thorium ions on reactive (Ni and liquid Bi) electrodes yields compounds Ni–Th and Bi–Th with a potential shift of around 0.7 V (for Ni and Bi) more anodic than the reduction of Th(IV) on inert substrate.
Item Type: | Article |
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Additional Information: | Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at : http://www.sciencedirect.com/science/article/pii/S0013468610004755 |
HAL Id: | hal-03548734 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
Laboratory name: | Laboratoire de Génie Chimique - LGC (Toulouse, France) - Procédés électrochimiques (PE) |
Statistics: | download |
Deposited On: | 04 Jun 2012 08:57 |
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