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Return to Abstracts of Patents Return to Abstracts of Patents 1250-1499 Patent Abstracts1302. ------. [I. G. FARBENINDUSTRIE A. G.] Hydrocarbons from Carbon Monoxide and Hydrogen Catalysts. British Patent 473,932, Oct. 22, 1937; appl. filed Nov. 26, 1936. Chem. Abs., vol. 32, 1938, p. 2954. Conversion of CO and H2 into hydrocarbons or their O derivatives such as alcohols, is effected in the presence of a catalyst prepared, before the conversion, by thermal treatment of an Fe compound; for example, Fe2O3, Fe(NO3)3, at >600º but below the melting or sublimation point of the compound or of the resulting Fe and by a treatment with reducing gases. The thermal treatment may be combined with the reducing treatment by effecting it in the presence of H2 containing gases, or the Fe compound may be heated >600º in nonreducing gases, such as N2 or air, and then treated with reducing gases at lower temperatures. The thermal treatment may be conducted in 1 or more stages at any pressure. Activating additions of Al2O3, Al(OH)3, SiO2, kieselguhr or compounds or Cu, Ti, Mn, W, Mo, Co, Th, Ce, Zr and other rare earths may be used. In an example, CO and H2 in the ratio 1:2 is led at 220º-320º and 12 atm. over a catalyst formed by heating precipitated Fe(OH)3, plus 5% of Al(OH)3 to 850º in a current of H2. Gaseous, liquid, and solid hydrocarbons are mainly formed. |