PRODUCTION OF HIGH-PURITY OXYGEN AND ELECTROLYTIC CELL

• Main Authors: MIYAKE AKIKO, YASUI SHINICHI, HIRAI SEIJI, MORIOKA TERUYUKI, KOBAYASHI HIROKO
• Format: Patent
• Language: English
• Published: 09.12.1997
• Edition: 6
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; METALLURGY

PROBLEM TO BE SOLVED: To easily obtain high-purity gaseous oxygen at a low cost by utilizing electrolysis of pure water. SOLUTION: When high-purity gaseous oxygen is produced by a hydrogen and oxygen generator, a gaseous oxygen generating compartment and a gaseous hydrogen generating compartment are partitioned by a solid electrolyte membrane between both the positive and negative electrode plates. Platinum- family metal grains P (or grains carrying the platinum-family metal grains) are arranged at the intermediate part of the membrane and electrically insulated from a porous plating layer 12 on the membrane surface in this electrolytic cell 1. Pure water is supplied to the oxygen generating compartment of the cell 1 and electrolyzed, and a part of the generated gaseous oxygen is chemically combined with the gaseous hydrogen, which has been generated in the hydrogen generating compartment of the cell, permeated through the membrane of the cell 1 and diffused toward the anode under the catalytic function of the platinum-family metal to lower the hydrogen concn. in the oxygen.