Rhodium recovery from hydroformylation reaction product

Details Rhodium recovery from hydroformylation reaction product Rhodium recovery from hydroformylation reaction product

C - Chemistry, Metallurgy

07

C

260/573.2

C07C 45/50 (2006.01) C07C 47/02 (2006.01)

Patent

CA 1301190

ABSTRACT In the hydroformylation of alkenes to aldehydes, rhodium is recovered from the stripped overhead of the hydroformylation reactor by condensing the overhead, removing the bulk of the aldehyde product from the condensed overhead, stripping the residue which remains with nitrogen gas to remove minor amounts of highly volatile aldehyde product remaining in the residue and redistilling the residue to remove components from the condensed overhead which are lower boiling than the catalyst components. The catalyst components including rhodium and phosphine ligand are returned to the hydroformylation reactor.

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