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AC impedance measurements in molten PbCl2—KCl: In(III) reduction and lead sulphide oxidation |
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| Authors: | D Lelievre A de Guibert V Plichon |
| Affiliation: | Laboratoire de Chimie Analytique, Département de Mme J. Badoz-Lambling, ESPCI-10, rue Vauquelin, F 75231 Paris Cedex 05, France |
| Abstract: | Impedance measurements have been performed in molten PbCl2—KCl at 400°C to investigate the mechanism of In(III) reduction and sulphide ion oxidation. In(III) reduction is purely diffusion controlled and represented by a Warburg impedance. The diffusion coefficient obtained for In(III) is D = 0.49 × 10?5 cm2s?1. The first oxidation step of sulphide is rapid and also diffusion controlled. |
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