3341. Shiras, R. N. (Shell Development Co.). Addition of Carbon Monoxide-Hydrogen to Unsaturated Compounds. United States Patent 2,490,283, Dec. 6, 1949; appl. filed Feb. 3, 1947, Serial No. 726,085; 9 claims (Cl. 260-632). Chem. Abs., vol. 44, 1950, p. 2541.

Patents

3341. Shiras, R. N. (Shell Development Co.). Addition of Carbon Monoxide-Hydrogen to Unsaturated Compounds. United States Patent 2,490,283, Dec. 6, 1949; appl. filed Feb. 3, 1947, Serial No. 726,085; 9 claims (Cl. 260-632). Chem. Abs., vol. 44, 1950, p. 2541.

Oxygenated compounds are produced by catalyzed addition of synthesis gas to unsaturated hydrocarbons in 2 steps. The synthesis gas for the 1st step is rich in CO. The ratio H₂ : CO is below 1.5 : 1. The synthesis gas for the 2d step is lean in CO, with ratio H₂ : CO greater than 1.5. The reaction takes place under adsorption conditions in an adsorption zone. The liquid containing dissolved H₂ and CO is passed from the adsorption zone to the 1st synthesis step. Liquid intermediate synthesis product is produced and passed to the 2d synthesis step. Lean gas is passed from the adsorption zone to the 2d step. 2 United States patents cited.