Selective electrowinning of palladium

A method of selectively electrowinning palladium from a mixture containing more palladium than platinum comprises dissolving the mixture in an acid solution containing at least 1 molar hydrochloric acid and subjecting the resulting solution to electrolysis in an electrowinning cell in which the solu...

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Bibliographic Details
Main Author GALE L HUBRED
Format Patent
LanguageEnglish
Published 05.09.1984
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
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Summary:A method of selectively electrowinning palladium from a mixture containing more palladium than platinum comprises dissolving the mixture in an acid solution containing at least 1 molar hydrochloric acid and subjecting the resulting solution to electrolysis in an electrowinning cell in which the solution is positioned in a cathode compartment which is separated by a cation permeable membrane from an anode compartment containing at least 0.5 molar hydrochloric acid. Palladium is selectively electrodeposited on the cathode until the concentrations of platinum and palladium are substantially equal. The resulting platinum-enriched electrolyte can be processed to recover the platinum therefrom.
Bibliography:Application Number: GB19830005676