2888.     ROĬTER, V. A., AND GAUKHMAN, S. S.  [Adsorption Properties of Differently Prepared Iron Catalysts of the Same Composition.]  Ber. Pissarjewsky Inst. physik. Chem., Akad. Wiss. Ukr. S.S.R., vol. 12, 1940, pp. 3-11, in German 12-13; Chem. Abs., vol. 35, 1941, p. 2686.

        Study was made of the nature of adsorption of H₂ and N₂ within the interval of -184° to +425° on 2Fe catalysts used in the synthesis of NH₃.  The catalysts contained 98% Fe₂O₃ and 2% Al₂O₃.  1 of the catalysts was fused in an electric arc.  3 types of sorption of H₂ were observed; physical sorption at 184° and 2 types of activated sorption analogous to pure Fe and other promoted catalysts.  With the fused catalyst there was activated sorption of N₂ at 250°-425° with measurable speed, but there was no measurable sorption of N₂ on the unfused catalyst.  Measurements also were made of the kinetics of NH₃ synthesis (both catalysts were used).  The catalytic activities are compared with the sorption characteristics.