Electrochemical studies on molten sodium hydroxide

Hidetaka Hayashi, Shiro Yoshizawa, Yasuhiko Ito

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The EpO2- diagram is very instructive for the selection of corrosion-resistant materials. In the molten hydroxide system, the equilibrium constant K1 of the reaction 2 OH- = H2O + O2- is one of the basic data for the EpO2- diagram. In order to obtain the constant K1, we determined the chemical potential of Na2O(μ°(Na2O)) dissolved in molten sodium hydroxide at 623 K (350°C) to be -4.71 × 105 J mol-1, by the use of the following cell: Na/beta-alumina/NaOH(Na2O)/ZrO2Y2O3/O2(Pt) K1 calculated from the above experimental data is then 1.0 × 10-10 atm.

Original languageEnglish
Pages (from-to)229-235
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume124
Issue number1-2
Publication statusPublished - Jul 10 1981
Externally publishedYes

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Sodium Hydroxide
Molten materials
Sodium
Aluminum Oxide
Chemical potential
Equilibrium constants
Alumina
Corrosion
sodium oxide
hydroxide ion

ASJC Scopus subject areas

  • Electrochemistry
  • Analytical Chemistry
  • Chemical Engineering(all)

Cite this

Hayashi, H., Yoshizawa, S., & Ito, Y. (1981). Electrochemical studies on molten sodium hydroxide. Journal of Electroanalytical Chemistry, 124(1-2), 229-235.

Electrochemical studies on molten sodium hydroxide. / Hayashi, Hidetaka; Yoshizawa, Shiro; Ito, Yasuhiko.

In: Journal of Electroanalytical Chemistry, Vol. 124, No. 1-2, 10.07.1981, p. 229-235.

Research output: Contribution to journalArticle

Hayashi, H, Yoshizawa, S & Ito, Y 1981, 'Electrochemical studies on molten sodium hydroxide', Journal of Electroanalytical Chemistry, vol. 124, no. 1-2, pp. 229-235.
Hayashi H, Yoshizawa S, Ito Y. Electrochemical studies on molten sodium hydroxide. Journal of Electroanalytical Chemistry. 1981 Jul 10;124(1-2):229-235.
Hayashi, Hidetaka ; Yoshizawa, Shiro ; Ito, Yasuhiko. / Electrochemical studies on molten sodium hydroxide. In: Journal of Electroanalytical Chemistry. 1981 ; Vol. 124, No. 1-2. pp. 229-235.
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