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Electrochemical behaviour of manganese in the aluminium electrorefining bath

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Abstract

The study of the mechanism of the electrode reaction Mn(II)/Mn in the aluminium electrorefining bath free of aluminium fluoride (1·48 NaF-1·05 BaCl2) has been carried out by chronopotentiometry with an inert graphite electrode, a manganese electrode and a platinum electrode; this study was supplemented by utilizing anodic chronopotentiometry with current reversal from a stationary state. The tests carried out at 800° C show that the exchange mechanism of Mn(II)/Mn is reversible, involves the exchange of two electrons and that the diffusion coefficient DMn(II)=(1·9±0·5)×10−5 cm2 s−1.

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Authors and Affiliations

  1. Laboratoire d'Energétique Electrochimique Associé au CNRS (LA 265)E.N.S.d'Electrochimie et d'Electrométallurgie B.P. 44, Domaine Universitaire, 38401, St-Martin D'Heres, France

    J. Chryssoulakis & J. Bouteillon

  2. Department of Metallurgy and Materials Science, Imperial College, London SW7, UK

    D. Inman

Authors
  1. J. Chryssoulakis
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  2. J. Bouteillon
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  3. D. Inman
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Chryssoulakis, J., Bouteillon, J. & Inman, D. Electrochemical behaviour of manganese in the aluminium electrorefining bath. J Appl Electrochem 9, 715–719 (1979). https://doi.org/10.1007/BF00614965

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  • DOI: https://doi.org/10.1007/BF00614965

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