Process for the recovery of substituted phosphines and...

Details Process for the recovery of substituted phosphines and... Process for the recovery of substituted phosphines and...

C - Chemistry, Metallurgy

07

C

260/573.2

C07C 47/02 (2006.01) C07C 45/50 (2006.01) C07C 45/80 (2006.01)

Patent

CA 1106858

ABSTRACT A hydroformylation process is disclosed utilising a rhodium complex catalyst and an excess of a triorganophosphine wherein active rhodium catalyst and triorganophosphine can be separated from inactive rhodium, "heavies" and triorganophosphine oxide in partially deactivated reaction medium by extraction into concentrated phosphoric acid or aqueous solutions containing at least 40% by weight phosphoric acid. By neutralisation of the phosphoric acid extract in the presence of organic solvent, e.g. aldehyde trimers, a solution of active rhodium catalyst and triorganophosphine can be produced that is suitable for re-use in the hydroformylation reaction.

332523

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