1900. ------. [KÖLBEL, H.] (Koppers Co.). Hydrocarbons From Gases Containing Carbon Monoxide and Hydrogen. United States Patent 2,244,710, June 10, 1941; appl. filed Sept. 23, 1938; Serial No. 231,275, in Germany Sept. 23, 1937; 5 claims (Cl. 260-449). Chem. Abs., vol. 35, 1941, p. 6094.

Gases are first passed over an Fe catalyst, hydrocarbons produced are removed from the treated gas mixture, and the gas is then further treated in the presence of another 8^th group metal such as Co or Ni as a catalyst for the production of additional hydrocarbons, which are also separated.