PROCESS FOR SILVER CATHODE ACTIVATION

Silver cathodes used in electrochemical synthesis are activated or reactivated after a period of use by immersion in a dilute alkaline aqueous solution of a compatible oxidizing agent. An expanded silver sheet cathode in an electrolytic cell used for the conversion of 3,4,5,6-tetrachloropicolinic ac...

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Bibliographische Detailangaben
Hauptverfasser:	BON, CHARLES K, KNOWLES, VERA M
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	Silver cathodes used in electrochemical synthesis are activated or reactivated after a period of use by immersion in a dilute alkaline aqueous solution of a compatible oxidizing agent. An expanded silver sheet cathode in an electrolytic cell used for the conversion of 3,4,5,6-tetrachloropicolinic acid to the herbicide 3,6-dichloropicolinic acid was reactivated by circulating an aqueous solution containing about 0.5 percent sodium hypochlorite and about 2 percent sodium hydroxide through the cell.