3611.     ---------------.  [WATANABE, S., MORIKAWA, K., AND IGAWA, S.]  Synthesis of Benzine by Catalytic Reduction of Carbon Monoxide at Atmospheric Pressure.  V.  Effect of Adding Lower Hydrocarbons to the Feed Gas.  Jour. Soc. Chem. Ind. (Japan), vol. 46, 1943, pp. 967-971; Chem. Abs., vol. 43, 1949, p. 2406.

        Fischer synthesis was carried out with 2 vol. CO and 1 vol. H2 mixed with 8-13% hydrocarbon, and the result was compared with that for feed gas having no admixture.  A catalyst of composition of Co:Cu:ThO2=9:1:2 was used.  When the feed gas contained saturated hydrocarbons, the rate of consumption of CO and the formation of CO2 were lowered and the formation of olefins was slightly increased.  With an increase in molecular weight of the added saturated hydrocarbons the number of C atoms in the gaseous saturated hydrocarbons formed was increased.  When the feed gas contained unsaturated hydrocarbons, the consumption of CO was lowered but the production of oil was not decreased, about 50% of olefin added being hydrogenated and 30% taking part in polymerization.  C2H2 yielded a liquid product by self-polymerization.