Hydroformylation of olefin to aldehyde using easily separated catalyst system with high activity and selectivity

摘要

Preparation of aldehydes comprises hydroformylation of olefinically unsaturated compounds with hydrogen (H2) and carbon monoxide (CO) in homogeneous phase in the presence of a catalyst system containing an organometallic complex compound and a molar excess of the ligand and separation of the catalyst system from the reaction mixture by pressure filtration on a semipermeable membrane of aromatic polyamide. The molar ratio of ligand to (I) is 9-30, preferably 10-25, especially 10-15; and (b) alkyl- or aryl-ammonium salts (I) of sulphonated, carboxylated or phosphonated aromatic diphosphines are not used as ligand.