Removal of metal residues from carbonylation products

Claim 1

IN A CARBONYLATION PROCESS WHEREIN A MONOOLEFIN CONTAINING N CARBON ATOMS, N BEING AN INTEGER RANGING FROM 2 TO 5, IS CONTACTED WITH CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A WATER-INSOLUBLE, OIL-SOLUBLE COBALT CARBONYLATION CATALYST UNDER CONDITIONS TO PRODUCE AN ALDEHYDE CONTAINING N+1 CARBON ATOMS AND TH ALDEHYDE IS CONTACTED WITH A WATER-INSOLUBLE, OIL-SOLUBLE DIMERIZATION-DEHYDRATION CATALYST IN A SYNTHESIS ZONE UNDER CONDITIONS TO PRODUCE A CRUDE DIMER ALDEHYDE CONTAINING 2N+2 CARBON ATOMS AND CONTAINING CATALYST RESIDUES DISSOLVED THEREIN, THE IMPROVEMENT WICH COMPRISES STEAM DISTILLING IN A DISTILLATION ZONE THE CATALYST CONTAINING CRUDE DIMER ALDEHYDE AT A TEMPERATURE BETWEEN ABOUT 212* AND 275*F. UNDER CONDITIONS SUCH THAT SUBSTANTIALLY NO LIQUID WATER PHASE IS MAINTAINED IN SAID STEAM DISTILLTION ZONE, REMOVING FROM SAID DISTALLATION ZONE AS A DISTILLATE A MIXTURE OF STEAM AND SUBSTANTIALLY CATALYST-FREE OXYGENATED PRODUCT HAVING NOT MORE THAN 2N+2 CARBON ATOMS PER MOLECULE, SEPARATING AN ORGANIC PHASE COMPRISING AN ALDEHYDE HAVING 2N+2 CARBON ATOMS FROM