3106.----- [RUHRCHEMIE, A. G.] [Process for the Catalytic Cracking of Hydrocarbons.] German Patent Appl. R 105,624, R 464, filed July 8, 1939 (Cl. IV d-23 b). TOM Reel 177, frames 1,594-1,600; Meyer Transl. PC-S-II, Fischer-Tropsch, vol. 1, chap.31, 19

PATENTS

3106.----- [RUHRCHEMIE, A. G.] [Process for the Catalytic Cracking of Hydrocarbons.] German Patent Appl. R 105,624, R 464, filed July 8, 1939 (Cl. IV d-23 b). TOM Reel 177, frames 1,594-1,600; Meyer Transl. PC-S-II, Fischer-Tropsch, vol. 1, chap.31, 1948, p. 77.

Procedure for maximum yields of high octane fuels partial pressures of hydrocarbons, about 1/30 kg. per cm.², obtained by addition of inert gas or preferably steam are essential. Acid activated earths, impregnated with a solution of phosphoric and boric acids or of phosphoric acid alone, were used. In certain instances, addition of Co or other metal salts was useful. Temperatures 480°-600° were used, depending on the starting materials. Cu, Cu alloys, alloyed steels, tin plated tubes, and ceramics may be used for the converters. Fe alloyed with Cr or Al is also suitable, 2 stage operation gave about 90% liquid hydrocarbons. The yield of 90-95 octane gasoline was about 50%.