The oxygen, oxygen/sulphur dioxide and oxygen/carbon dioxide electrodes in molten lithium sulphate—potassium sulphate eutectic

✍ Scribed by O.E. Abdel-Salam; M.A. Soliman

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 690 KB
• Volume: 28
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(83)85133-0

✦ Synopsis

Open-circuit potential, potentiostatlc and voltammetric measurements of the O,, O,/SO, and O&O, electrodes have been made in molten Li,SO,-K,SO, eutectic at 625°C. in the absence of SO2 the overall reaction of the 0, electrode is the reduction of 0, to O*-through the formation of 0: -ions. In the presence of SO, the overall reaction LS the reduction of SO, and 0, to SO:-, probably through the formation of SO:-. The overall reaction of the 02/C02 electrode is similar to that of the same electrode in molten carbonates. ie the reduction of CO, and 0, to CO: -. The transfer coefficients and exchange currents have been estimated for these reactions & platinum ani gold. 34x 0. E. ABDEL-SALAMANDM. Hocking[lO] suggested that the potential-determining process of these electrodes in molten Na,SO, at 900°C could be as folIows: so,+e-= so2++o:-.

A. SOLIMAN

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