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Potentiometric measurements of oxygen electrodes in molten sodium sulphate

✍ Scribed by C.A.C. Sequeira; M.G. Hocking

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
574 KB
Volume
22
Category
Article
ISSN
0013-4686

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✦ Synopsis

Abstrrti-The dependence of the potential of platinum and gold electrodes in molten Na2S04 on the composition of surrounding atmospheres of SO, t Oz. and of N2 + O2 has been investigated at 900". The electrode potential dependence on the oxide ion concentration in the electrolyte in an oxygen atmosphere is also reported. It is postulated that the potential of O,(Au) and O,(Pt) electrodes in basic molten sulphate is controlled by the reaction: go, + O'-= O:-. It is thought that the sulphur dioxide electrode reaction is very complex and further studies are required to elucidate its mechanism. However, in the light of the present work it seems reasonable to consider this electrode as an oxygen electrode which also responds to SOI and SO,.

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