Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1997-04-09
1999-06-01
Bos, Steven
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
502 22, 562522, 562598, B01J 2034, C07C 5114, C07C 5702
Patent
active
059088036
ABSTRACT:
The present invention relates to the isolation of a palladium-based catalyst from a mixture in which it is dissolved. More specifically, the invention relates to the isolation of a palladium-based catalyst from a mixture originating from the reaction of hydroxycarbonylation of butadiene to pentenoic acids. It therefore consists of a process for the isolation of at least a portion of the palladium dissolved in a solution also containing at least 3-pentenoic acid, characterized in that the said solution is acidified and stirred with an aqueous solution of hydrochloric acid, so as to obtain two liquid phases including an aqueous phase containing at least a portion of the palladium.
REFERENCES:
patent: 3857895 (1974-12-01), Booth
patent: 3928231 (1975-12-01), Frankel
patent: 5288903 (1994-02-01), Bunel et al.
patent: 5625096 (1997-04-01), Denis et al.
Leconte Philippe
Patois Carl
Bos Steven
Ghyka Alexander G.
Rhone-Poulenc Fiber & Resin Intermediates
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