A METHOD FOR REUSING RHENIUM FROM A DONOR SPENT EPOXIDATION CATALYST

A method for reusing rhenium from a donor spent epoxidation catalyst, the method comprising: providing a donor comprising spent epoxidation catalyst comprising rhenium, the donor having a cumulative alkylene oxide production of 0.16 kT/m3 of the spent epoxidation catalyst or more; contacting the don...

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Bibliographic Details
Main Authors MATUSZ MAREK, FRAGNITO RICHARD A
Format Patent
LanguageEnglish
Published 30.08.2007
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:A method for reusing rhenium from a donor spent epoxidation catalyst, the method comprising: providing a donor comprising spent epoxidation catalyst comprising rhenium, the donor having a cumulative alkylene oxide production of 0.16 kT/m3 of the spent epoxidation catalyst or more; contacting the donor with an aqueous liquid to produce rhenium-depleted donor and aqueous extract comprising extracted rhenium; separating the aqueous extract and the rhenium-depleted donor; and, using the extracted rhenium as a source of rhenium in a subsequent process.
Bibliography:Application Number: US20060613862