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Reduction of sulphur in PbSPbCl2NaCl melts

✍ Scribed by Maria Skyllas-Kazacos; Barry J. Welch

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
318 KB
Volume
25
Category
Article
ISSN
0013-4686

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✦ Synopsis

Abstmci ~ The reduction of dissolved sulphur and the soluble species formed during the electrolysis of PbS dissolved in the PbCI,-NaCI eutectic has been studied chronopotentiometrically.

The pre-lead reduction process reported earlier[l] can now be assigned to a subsulphide species that is generated electrochemically.

At higher

PbS concentrations (eg lo-'moi cmm3 ), elemental sulphur introduces a new reduction wave in addition to the subsulphide. The satoration solubility of sulphur is approximately proportional to the square of the PbS concentration'. It has heen estimated to he 2.3 x IO-' mol S cmW3 at 430°C for a melt containing 2.4 x IO-" mol PbS cmL3 in the PbCI,-NaCl eutectic.

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