1818.  ------. [KEITH, P. C.] (Hydrocarbon Research, Inc.). Process for Synthesizing Motor Fuels of High Antiknock Value. United States Patent 2,470,216, May 17, 1949; appl. filed June 21, 1945, Serial No. 600,734; 8 claims (Cl. 260-449.6). Chem. Abs., vol. 43, 1949, p. 5574.

Motor fuels from CO-H₂ reaction are improved by passing the synthetic oil in vapor phase through a mass solid catalyst such as activated alumina or bauxite at temperatures above 700º F., preferably 800º-900º F. The catalyst is regenerated by substantially pure O₂, and the resulting flue gas is essentially CO and CO₂ in ratio 1:2 by vol. This gas, which contains all of the C laid down on the catalyst and which normally would represent a loss, is in a form suitable for recycling to the synthesis gas generator. A polymerization step produces an additional gasoline fraction from the normally gaseous hydrocarbons. 1 literature ref. and 9 United States patents cited.