Abstract
The anode products formed when electrowinning lead from lead sulphate dissolved in LiCl-KCl eutectic have been determined when using a carbonaceous anode.
Results indicate that electrolytic decomposition proceeds by the overall reaction
However at low current densities the CO2 content increases by the reaction
The secondary reactions of the cathodically produced lead also increase the CO2 and sulphur yields according to the following overall reactions
and
All the above electrochemical reactions are extensively polarized and chlorine co-evolution starts at low current densities.
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Jenkins, R.A., Welch, B.J. Electrolysis of molten salt solutions containing PbSO4 . J Appl Electrochem 3, 53–60 (1973). https://doi.org/10.1007/BF01119467
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DOI: https://doi.org/10.1007/BF01119467