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Journal of Applied Electrochemistry

, Volume 22, Issue 6, pp 577–580 | Cite as

Study of the electrochemical reduction of lead chloride on a liquid lead electrode in NaCl-KCl melt

  • M. E. De Almeidi Lima
  • J. Bouteillon
  • J. P. Diard
Papers

Abstract

The electrochemical reduction of lead chloride on a liquid lead electrode of renewable surface was investigated in the NaCl−KCl eutectic melt at 700°C. Current oscillations were shown by voltammetric study. Under these circumstances the analysis of the experimental data was equivocal. Chronopotentiometric techniques similarly revealed potential perturbations. Nevertheless, it was possible to show that the lead chloride reduction occured in one reversible step involving a two electron transfer, according to the reaction
$$PbCl_2 + 2e^ - \Leftrightarrow Pb + 2Cl^ - $$

The observed perturbations were ascribed to the electrode movements. Impedance measurements corroborated the results obtained by other methods: the electron transfer is fast and the electroactive species diffusion is the limiting step. The liquid electrode was considered similar to a rotating electrode whose Levich convective diffusion layer thickness and rotation speed were estimated.

Keywords

Electron Transfer Rotation Speed Diffusion Layer Electrochemical Reduction Convective Diffusion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • M. E. De Almeidi Lima
    • 1
  • J. Bouteillon
    • 2
  • J. P. Diard
    • 2
  1. 1.Departemento de QuimicaUniversidade Federal da ParaibaJoâo Pessoa PbBrasil
  2. 2.Centre de Recherche en Electrochimie Minérale et en Génie des procédésENSEEGSaint Martin d'HèresFrance

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