PATENT

3463. ----- [STANDARD OIL CO.]  Catalyst Removal in Carbonylation Reaction.  British Patent 660,737, Nov. 14, 1951.  Chem. Abs., vol. 46, 1952, p. 4202.

Catalyst compounds are separated from the reaction products obtained in the carbonylation stage of an Oxo synthesis reaction for the preparation of oxygenated organic compounds by reaction of CO and H₂ with olefinic compounds in the presence of a catalyst, by injecting steam at 0-200 p. s. i. g. and 100°-204° into the reaction products to decompose the catalyst compounds and by condensing the mixture of vapors to obtain a dispersion of the catalyst metal in H₂O.  The dispersion is separated from the reaction products with subsequent recovery of the catalyst metal from the dispersion.  In an example, steam at 171° was injected at 125 lb. pressure into a bomb containing 1 l. of H₂O and 500 cc. primary reaction product resulting from the carbonylation of a C₇ olefin in the presence of a Co catalyst.  After the treatment the carbonylation product was found to contain 0.004% Co, as compared to 0.113% before steaming.