Electrochemical studies on molten sodium hydroxide

Hidetaka Hayashi; Shiro Yoshizawa; Yasuhiko Ito

doi:10.1016/S0022-0728(81)80300-2

Electrochemical studies on molten sodium hydroxide

Hidetaka Hayashi, Shiro Yoshizawa, Yasuhiko Ito

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The E-pO^2- 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+O^2- is one of the basic data for the E-pO^2- diagram. In order to obtain the constant K₁, we determined the chemical potential of Na₂O(μ^o(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)/ZrO₂-Y₂O₃/O₂(Pt). K₁ calculated from the above experimental data is then 1.0×10^-10 atm.

Original language	English
Pages (from-to)	229-235
Number of pages	7
Journal	Journal of Electroanalytical Chemistry
Volume	124
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-0728(81)80300-2
Publication status	Published - Jul 10 1981

ASJC Scopus subject areas

Analytical Chemistry
Chemical Engineering(all)
Electrochemistry

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10.1016/S0022-0728(81)80300-2

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title = "Electrochemical studies on molten sodium hydroxide",

abstract = "The E-pO2- 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 E-pO2- diagram. In order to obtain the constant K1, we determined the chemical potential of Na2O(μo(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)/ZrO2-Y2O3/O2(Pt). K1 calculated from the above experimental data is then 1.0×10-10 atm.",

author = "Hidetaka Hayashi and Shiro Yoshizawa and Yasuhiko Ito",

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doi = "10.1016/S0022-0728(81)80300-2",

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journal = "Journal of Electroanalytical Chemistry",

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T1 - Electrochemical studies on molten sodium hydroxide

AU - Hayashi, Hidetaka

AU - Yoshizawa, Shiro

AU - Ito, Yasuhiko

PY - 1981/7/10

Y1 - 1981/7/10

N2 - The E-pO2- 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 E-pO2- diagram. In order to obtain the constant K1, we determined the chemical potential of Na2O(μo(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)/ZrO2-Y2O3/O2(Pt). K1 calculated from the above experimental data is then 1.0×10-10 atm.

AB - The E-pO2- 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 E-pO2- diagram. In order to obtain the constant K1, we determined the chemical potential of Na2O(μo(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)/ZrO2-Y2O3/O2(Pt). K1 calculated from the above experimental data is then 1.0×10-10 atm.

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Electrochemical studies on molten sodium hydroxide

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