Method for extractive processing of cobalt-containing...

Details Method for extractive processing of cobalt-containing... Method for extractive processing of cobalt-containing...

C - Chemistry, Metallurgy

07

C

252/80, 260/528.

C07C 53/00 (2006.01) B01J 23/94 (2006.01) B01J 31/40 (2006.01) C01G 51/00 (2006.01) C07C 51/48 (2006.01)

Patent

CA 1178298

ABSTRACT A method is disclosed of processing spent cobalt-containing catalysts for re-use in hydrocarboxylation reactions. The reaction mixture obtained after reacting olefins with carbon monoxide and water or alkanol is oxidized and the cobalt-containing residue is treated with a C1 to C4 carboxylic acid and water. The resulting organic and aqueous phases are separated and the cobalt is recovered from the carboxylic acid/water phase in the form of the carboxylic acid salt. This salt is returned to the hydro- carboxylation reaction for re-use.

366535

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