Studies on oxygen reduction in molten NaOH

Hidetaka Hayashi; Shiro Yoshizawa; Yasuhiko Ito

doi:10.1016/0013-4686(83)85101-9

Studies on oxygen reduction in molten NaOH

Hidetaka Hayashi, Shiro Yoshizawa, Yasuhiko Ito

Graduate School of Natural Science and Technology

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

7 Citations (Scopus)

Abstract

Oxygen reduction in molten NaOH at 623 K has been studied by the use of an Ni rotating disk electrode and a porous O₂ gas electrode. It was clarified that the diffusing species to the electrode surface is molecular oxygen itself, and not an oxygen-containing anion, such as O^2-₂, by limiting current measurements. Kinetic studies show that the following reaction mechanism is more probable: {A figure is presented} where the latter is rate determining. Since H₂O transport to the electrode surface is rate determining, pO^2- control is especially important, taking into account the following equilibrium; {A figure is presented}.

Original language	English
Pages (from-to)	149-153
Number of pages	5
Journal	Electrochimica Acta
Volume	28
Issue number	2
DOIs	https://doi.org/10.1016/0013-4686(83)85101-9
Publication status	Published - Feb 1983

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

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10.1016/0013-4686(83)85101-9

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title = "Studies on oxygen reduction in molten NaOH",

abstract = "Oxygen reduction in molten NaOH at 623 K has been studied by the use of an Ni rotating disk electrode and a porous O2 gas electrode. It was clarified that the diffusing species to the electrode surface is molecular oxygen itself, and not an oxygen-containing anion, such as O2-2, by limiting current measurements. Kinetic studies show that the following reaction mechanism is more probable: {A figure is presented} where the latter is rate determining. Since H2O transport to the electrode surface is rate determining, pO2- control is especially important, taking into account the following equilibrium; {A figure is presented}.",

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AU - Hayashi, Hidetaka

AU - Yoshizawa, Shiro

AU - Ito, Yasuhiko

PY - 1983/2

Y1 - 1983/2

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AB - Oxygen reduction in molten NaOH at 623 K has been studied by the use of an Ni rotating disk electrode and a porous O2 gas electrode. It was clarified that the diffusing species to the electrode surface is molecular oxygen itself, and not an oxygen-containing anion, such as O2-2, by limiting current measurements. Kinetic studies show that the following reaction mechanism is more probable: {A figure is presented} where the latter is rate determining. Since H2O transport to the electrode surface is rate determining, pO2- control is especially important, taking into account the following equilibrium; {A figure is presented}.

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Studies on oxygen reduction in molten NaOH

Abstract

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