PROCESS FOR RECOVERING RUTHENIUM FROM USED RUTHENIUM OXIDE-COMPRISING CATALYSTS

The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is not readily soluble in mineral acid, which comprises the steps: a) the ruthenium oxide-comprising catalyst is reduced in a...

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Bibliographic Details
Main Authors SESING MARTIN, HENZE GUIDO, URTEL HEIKO, KARCHES MARTIN
Format Patent
LanguageEnglish
Korean
Published 08.09.2011
Subjects
CHEMISTRY
DISPOSAL OF SOLID WASTE
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PERFORMING OPERATIONS
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
RECLAMATION OF CONTAMINED SOIL SOIL
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is not readily soluble in mineral acid, which comprises the steps: a) the ruthenium oxide-comprising catalyst is reduced in a gas stream comprising hydrogen chloride and, if appropriate, an inert gas at a temperature of from 300 to 500° C.; b) the reduced catalyst from step a) comprising metallic ruthenium on the sparingly soluble support material is treated with hydrochloric acid in the presence of an oxygen-comprising gas, with the metallic ruthenium present on the support being dissolved as ruthenium(III) chloride and obtained as an aqueous ruthenium(III) chloride solution; c) if appropriate, the ruthenium(III) chloride solution from step b) is worked up further.
Bibliography:Application Number: KR20117016612