PATENTS

      1652.  ------.  [INTERNATIONAL HYDROCARBON SYNTHESIS CO.] [Catalytic Hydrogenation of Carbon Monoxide.]  French Patent 862,536.  Mar. 8, 1941; appl. Filed Dec. 23, 1939.  Chem. Abs., vol. 42, 1948, p. 9124.

In the formation of liquid hydrocarbon from CO and H₂, using Co, Th, and diatomaceous earth catalysts, the process is carried out in several stages, the fresh gases first passing 150°-350° over a catalyst previously used.  Describes apparatus.