2204.     ---------------.  [KODAMA, S., MATSUMURA, S., TARAMA, K., ANDO, T., AND YOSHIMORI, K.]  Physicochemical Research on Gasoline Synthesis.  XII.  Adsorption of Carbon Monoxide on Iron, Iron-Kieselguhr, Iron-Kieselguhr-Copper-Manganese Catalysts.  Jour. Soc. Chem. Ind. (Japan), vol. 45, 1944, pp. 1-5; Chem. Abs., vol. 43, 1949, p. 2413.

        Adsorption of CO at 0°-300° was measured.  In all cases, adsorption accompanied by the formation of carbide took place above 150°, and the addition of kieselguhr and Cu+Mn greatly increased the velocity of carbide formation.  The effectiveness of kieselguhr as carrier and promoter in gasoline synthesis is considered to be due to the increase in the number of active centers for H₂ and CO, the increase in the amount of activated adsorption of H₂ and the velocity of carbide formation, while the effectiveness of Cu+Mn as promoter lies in the increase in the number of active centers for carbide formation.  The reaction temperatures of the catalysts of the Fe series are higher than those of the Co series because the Fe catalysts form carbides at higher temperatures.