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Return to Abstracts of Patents Return to Abstracts of Patents 1000-1249 Patent Abstracts1220. ------. [I. G. FARBENINDUSTRIE A. G.] [Cracking Process.] French Patent 855,812, May 21, 1940; appl. filed June 6, 1939. Chem. Zentralb., 1940, II, p. 1818. Hydrocarbons that have been synthesized from CO and H2, are cracked to antiknock gasoline at 350° and at least 15 atm., preferably >20 atm., over catalysts of SiO2 or silicates or containing these substances. Example: A gas oil synthesized from CO and H2 at 460° and 30 atm. is cracked over bleaching earth at a throughput of 1 l. gas oil to 2 l. of catalyst per hr. The product contains 45% of gasoline b. up to 200° with octane number of 69.5%, which can be raised to 84 by addition of 0.09 vol. % of tetraethyl lead. |