PATENT

2925. -----.[RUHRCHEMIE, A.G.] [Hydrocarbons From Carbon Dioxide and Hydrogen.]  Belgian Patent 418,230, Apr. 30, 1937; appl. filed Nov. 4, 1936. Chem. Zentralb., 1937, II, p. 4101.

Catalyst whose efficiency is reduced by the deposition thereon of solid substances in activated during the course of the synthesis and the rise in temperature with H₂, steam, or solvents.