Invention Grant
- Patent Title: Rhenium recovery from used reductive amination catalysts
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Application No.: US14387101Application Date: 2013-03-11
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Publication No.: US10399064B2Publication Date: 2019-09-03
- Inventor: Stephen W. King , William C. Hoffman
- Applicant: DOW Global Technologies LLC
- Applicant Address: US MI Midland
- Assignee: DOW Global Technologies LLC
- Current Assignee: DOW Global Technologies LLC
- Current Assignee Address: US MI Midland
- Agency: Kagan Binder PLLC
- International Application: PCT/US2013/030233 WO 20130311
- International Announcement: WO2013/148140 WO 20131003
- Main IPC: C01G47/00
- IPC: C01G47/00 ; B01J23/889 ; C22B7/00 ; C22B61/00 ; B01J38/58 ; B01J38/70 ; B01J23/94 ; B01J23/92 ; B01J37/02 ; C07C209/16 ; C07C213/02 ; C07D295/027 ; B01J38/12 ; B01J38/60 ; B01J38/64
Abstract:
The present invention provides techniques that selectively recover Re from reductive amination catalysts. In particular, the present invention allows Re to be recovered selectively relative to Ni, Co, and/or Cu, and particularly Ni, that are often present on reductive amination catalysts. The present invention uses a combination of oxidation and extraction techniques to selectively recover Re relative to Ni, Co, and/or Cu. Advantageously, the recovery is selective even when using aqueous solutions for extraction.
Public/Granted literature
- US20150087837A1 RHENIUM RECOVERY FROM USED REDUCTIVE AMINATION CATALYSTS Public/Granted day:2015-03-26
Information query
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