3214.     SMITH, D. F., HAWK, C. O., AND REYNOLDS, D. A.  Synthesis of Higher Hydrocarbons From Water Gas.  II.  Ind. Eng. Chem., vol. 20, 1928, pp. 1341-1348; British Chem. Abs., 1929, B, p. 82; Chem. Abs., vol. 23, 1929, p. 814.

        Catalyst made from coprecipitated hydroxides of Co, Mn, and Cu was used to synthesize hydrocarbons from purified water gas at atmospheric pressure and at temperatures about 250°.  Space velocities 120-360 were used.  Extensive tabulation is made of the nature and quantities of hydrocarbons formed, the quantities of water gas converted, and their relation to the temperature and space velocity.  The quantities of oxygenated products formed were comparatively small.  The percent of CH₄ in the hydrocarbon product was higher the higher the temperature and the more active the catalyst.  The proportion of very heavy hydrocarbons was greater at the lower space velocities and the higher temperatures.  At the higher space velocities and higher temperatures, relatively more unsaturated hydrocarbons were formed.  At 260° and 260 space velocity, the hydrocarbon product was 21% by weight CH₄, 45% enriching hydrocarbons (German Gasol), 34% motor fuel.  The yields of hydrocarbons, exclusive of CH₄, vary 92-156 gm. per m.³ of H₂+CO converted.  At 203° and 230 space velocity, about 18% of the water gas was converted in a single pass.