1938. ------. [KOPPERS, H., Industrielle Maatschappij N. V.]. [Gas Containing Carbon Monoxide and Hydrogen.] Belgian Patent 416,369, Dec. 1, 1936; appl. filed July 3, 1936. Chem. Bentralb., 1937, II, p. 4145.

Mixture of steam and coke-oven gas is heated to such a temperature that the hydrocarbons and the steam are decomposed.