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      577.  ------.  [DU PONT DE NEMOURS, E. I., & Co.]  Aldehydes and Other Organic Oxygen Containing Compounds.  British Patent 631,316. Nov. 1, 1949.  Chem. Abs., vol. 44, 1950. p. 4023.

            Saturated aldehydes and ketones are prepared from olefins, CO, and H2 in presence of a hydrogenation catalyst at 125º-350º and pressures >300 atm.  The catalyst, a soluble salt of Co or Cu (CoCl2.6 H2O, Co(OAc),4 H2O, Co naphtherate, etc.) used in amounts of 0.1-3% of the total reaction mixture, is recycled as a distillation residue from the distillation of the reaction product.

            See also United States Patent 2,437,600 (abs. 877). and British Patent 614,010 (abs. 585).