2416.     ----------------.  [NEGISHI, R., AND KAMIIKE, O.]  Hydrocarbons From Carbide.  III.  Noncatalytic Polymerization Under Ordinary Pressure.  Systems of Calcium Carbide With Carbon Dioxide, Carbon Monoxide, and Hydrogen Chloride.  Bull. Chem. Soc. Japan, vol. 17, 1942, pp. 244-251; Chem. Abs., vol. 41, 1947, pp. 4434-4435.

        Effects of CO, CO2, and HCl on the synthesis of hydrocarbon liquids directly from Ca carbide in the temperature range of 340-420 have been studied.  The results are in agreement in general with those in the H2 system.  The main reaction of the nascent C2H1 molecules is only slightly affected by the carrier gases.  In the CO2 system, the yield of liquid products has been found as high as 43% of the total reacted C2H2, CO2 takes part only in the formation of CaC2.  The presence of H2 seems to have no effect on the character of the liquid products.  Whereas CO2 has favorable effects, CO has unfavorable effects, and HCl has no effect at all on the yield of liquid hydrocarbons.