362. ------. [CHEMISCHE WERKE ESSENER STEINKOHLE A. G.] [Process for the Production of Higher Hydrocarbons by the Catalytic Hydrogenation of the Oxides of Carbon.] German Patent Appl. C 56,917, filed Nov. 27, 1941 (Cl. IV d-12 6) TOM Reel 177, frames

Patent Abstracts

362. ------. [CHEMISCHE WERKE ESSENER STEINKOHLE A. G.] [Process for the Production of Higher Hydrocarbons by the Catalytic Hydrogenation of the Oxides of Carbon.] German Patent Appl. C 56,917, filed Nov. 27, 1941 (Cl. IV d-12 6) TOM Reel 177, frames 1,663-1.665: Meyer Transl. PC-S-II. Fischer-Tropsch. Vol. 1, chap. 45. 1948. p. 108.

Hydrogenation takes place in several stages, at least 2, and in such a manner that the activity of the catalyst increase in the direction of the gas flow, that is the fresh or regenerated catalyst is introduced into the last stage of the process and the exhausted catalyst withdrawn from the 1^st stage.