Selective separation of iron by treatment with an...

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Iron group metal

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C502S022000, C502S028000, C210S670000, C210S688000, C210S669000, C562S527000, C562S538000

Reexamination Certificate

active

06872369

ABSTRACT:
The invention relates to a process for selectively separating iron from other metal ions, in particular ions present in certain oxidation catalysts.It also relates to a process for recycling catalysts in the reaction for the oxidation of alcohols and/or ketones to carboxylic acids and more particularly the oxidation of cyclic alcohols and/or cyclic ketones to dicarboxylic acids, such as the oxidation of cyclohexanol and/or cyclohexanone to adipic acid. This process consists in treating the solution comprising the oxidation catalyst, before it is recycled, with an ion-exchange resin which makes it possible to selectively separate the iron from the other metal elements, in particular from copper and from vanadium.

REFERENCES:
patent: 3965164 (1976-06-01), Blay
patent: 5281631 (1994-01-01), Horwitz et al.
patent: 5582737 (1996-12-01), Gula et al.
patent: 5723098 (1998-03-01), Salzburg et al.
patent: 5955394 (1999-09-01), Kelly
patent: 6232353 (2001-05-01), Alexandratos et al.
patent: 0 761 638 (1997-03-01), None
R. Chiarizia et al.: “Diphonix resin: a review of its properties and applications,”Separation Science and Technology,vol. 32, No. 1-4, (1997), pp. 1-35, no month.
Database WPI, Section CH, Week 197134, Derwent Publications Ltd., London, GB; AN 1971-55098S, Abstract of SU 277766, no month, 1971.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Selective separation of iron by treatment with an... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Selective separation of iron by treatment with an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective separation of iron by treatment with an... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3414219

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.