309. ------. [CARBO-NORIT-UNION VERWALTUNGS-G. M. B. H.] [Synthetic Oils.] French Patent 824,002, Jan. 31, 1938. Chem. Abs., vol. 32, 1938. p. 4324.

Patent Abstracts

Describes improvement in the synthesis of hydrocarbon oils from gaseous agents, such as CO and H₂, by processes in which the crude reaction products are brought into contact with a solid adsorbent, from which the adsorbed products are afterward recovered with steam. The improvement consists in fractionally condensing the mixture of steam and vaporized products in a rectifying column so as to recover separately a low-boiling oil useful as a motor fuel and a residual oil of higher boiling point. The mixture of steam and vaporized products may first be washed to eliminate acids and other oxygenated organic compounds that may be present.