3149.     SEBASTIAN, J. J. S.  Catalytic Reduction of Carbon Monoxide to Methane at Atmospheric Pressure.  Carnegie Inst. Technol., Coal Research Lab. Contrib., vol. 35, 1936, 8 pp.; Cong. chim. ind., 15th Cong., Brussels, 1936, pp. 875-885; Brennstoff-Chem., vol. 17, p. 393; British Chem. Abs., 1936, B, p. 531; Chem. Abs., vol. 30, 1936, p. 3968.

        Rate of reduction of CO at normal pressures over various catalysts maintained at temperatures in the range 200°-550° was studied.  Mixtures (1:3) of CO and H₂, both pure and with the addition of 0.003% H₂S, were tried.  Ni gave good conversion but was rapidly poisoned.  Mo was active and not so sensitive to poison, but 2 Mo oxide preparations proved inactive.  MoS₂, alone or mixed with silica gel, showed activity and was resistant to poisoning.  The nature as well as the amount of hydrocarbons was affected by the catalyst and by the temperatures and rate of flow.  Over Ni and over MoS₂, CH₄ predominated in the product, but up to 8% C₂H₆ and C₃H₈ might be present.