Process for recovering catalyst for use in preparing .alpha.-(4-

Details Process for recovering catalyst for use in preparing .alpha.-(4- Process for recovering catalyst for use in preparing .alpha.-(4-

1989-12-26

1991-01-29

Konopka, Paul E.

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,...

423140, 423149, 502 20, 502 31, 502 34, 562406, B01J 3868, B01J 3140, C01G 5302, C07C 5112

Patent

active

049886525

ABSTRACT:
An efficient process for recovering a catalyst used in the preparation of .alpha.-(4-isobutylphenyl)propionic acid, which comprises recovering part of a nickel catalyst component, such as nickel carbonyl, from a purge gas, concentrating a reaction product mixture, adding an organic solvent thereto to extract the reaction product, then separating and recovering the majority of the catalyst components from the extraction residue.

REFERENCES:
patent: 4356320 (1982-10-01), Naglieri et al.
patent: 4843172 (1989-06-01), Tanaka et al.

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