3061. ----- [RUHRCHEMIE, A.G.] [Process for Producing Antiknock Motor Fuels From Products Obtained by Hydrogenation of Carbon Monoxide.] German Patent Appl. R 107,333, R 501, filed Apr. 8, 1940 (Cl. Ivd-23 b). TOM Reel 37, bag 3,451, item 35, 4 pp.; TOM

PATENT

3061. ----- [RUHRCHEMIE, A.G.] [Process for Producing Antiknock Motor Fuels From Products Obtained by Hydrogenation of Carbon Monoxide.] German Patent Appl. R 107,333, R 501, filed Apr. 8, 1940 (Cl. Ivd-23 b). TOM Reel 37, bag 3,451, item 35, 4 pp.; TOM Reel 177, frames 1,601-1,6941l; Meyer Transl. PC-S-II, Fischer-Tropsch, vol.1 chap. 32, 1948, p. 80.

Primary products from CO hydrogenation, b.>200° are cracked under mild conditions (10 atm., about 500°) to give a maximum yield of monoolefins. The cracking fraction up to 70° is polymerized by action of a catalyst, such as a H₃PO₄, catalyst, under pressure, at about 200°. The cracking fraction >70° is treated in the presence of activated fuller’s earth ( up to 5 atm., about 200°), resulting in a shift of the terminal double bond. This process raises the octane number of the cracking monoolefins 15-20 units, giving high octane products, which may be mixed with the primary products b. <200° to give maximum yields of high antiknock fuels. This is an addition to German Patent Appl. R 102,112 (abs. 3060).