| 摘要 |
PURPOSE: A method for manufacturing alkali metals such as sodium and potassium electrochemically from alkali metal amalgam in an electrolytic cell is provided, which is less energy consumable than conventional Downs process while securing stable operation. CONSTITUTION: The electrolytic cell comprises an anode containing alkali metal amalgam, a solid electrolyte having alkali metal ion conductivity and a cathode. The solid electrolyte and the cathode are mutually divided through an electrolytic solution. As the electrolyte, dissolved NaOH, NaNH2 or a mixture thereof, or dissolved KOH, KNH2 or a mixture of is used, and the solid electrolyte can be selected from the group consisting of sodium beta-alumina, sodium beta"-alumina and beta/beta"-alumina or the group consisting of potassium beta-alumina, potassium beta"-alumina and potassium beta/beta"-alumina.
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