2. ADAMS, C. E., AND BURNEY, D. E. (Standard Oil Company of Indiana). Oxo Process. United Stated Patent 2,464,916, Mar. 22, 1949; appl. Filed Nov. 29, 1947, Serial No. 788,846: 10 Claims (Cl. 260-638). Chem. Abs., vol 43, 1949, p. 5032.

PATENTS

2. ADAMS, C. E., AND BURNEY, D. E. (Standard Oil Company of Indiana). Oxo Process. United Stated Patent 2,464,916, Mar. 22, 1949; appl. Filed Nov. 29, 1947, Serial No. 788,846: 10 Claims (Cl. 260-638). Chem. Abs., vol 43, 1949, p. 5032.

Single gas stream of CO and an excess of H₂ are supplied to the carbonylation reaction zone. The temperature is 200°-500° F., the pressure 50-300 atm., and the space velocity 0.05-10 vol. of liquid per vol. of catalyst per hr. The effluent gases containing unreacted H₂ are subsequently contacted with fresh olefin feed and metallic catalyst. Enough of the catalyst in the form of the metal carbonyl may be added to the olefin feed to make up for the quantity normally lost, and simultaneously, virtually all metal carbonyls and at least part of the CO in the H₂ stream are removed. The 2^nd zone has a temperature 125°-200° F. The H₂stream, optionally after an additional purification step, may be used for the hydrogenation of the carbonylation product. 1 literature ref. And 5 United States Patents cited.