Oxygen depolarized electrolysis of sodium chloride by the use of a β-alumina-molten salt system

Hidetaka Hayashi, Shiro Yoshizawa, Yasuhiko Ito

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper is concerned with oxygen depolarized electrolysis of NaCl by the use of β-alumina solid electrolyte and molten salts. In the electrolysis, dry chlorine gas and pure molten sodium hydroxide are produced from sodium chloride, oxygen and water. Because the oxygen reduction proceeds very smoothly in the molten sodium hydroxide, this process is very promising for the future. The theoretical decomposition voltage of this process is estimated to be 1.5 V, which is lower than that of the process without an oxygen cathode by 1.1 V. The model cell study shows that a terminal voltage of 3 V at 50 A dm-2 is attainable.

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalJournal of Applied Electrochemistry
Volume15
Issue number2
DOIs
Publication statusPublished - Mar 1 1985

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry
  • Materials Chemistry

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