2200.     KODAMA, S., MATSUMURA, S., TARAMA, K., ANDO, T., AND YOSHIMORI, K.  Physicochemical Research on Gasoline Synthesis.  VII.  Velocity of Adsorption of Hydrogen by Iron.  Jour. Soc. Chem. Ind. (Japan), vol. 45, 1942, pp. 254-258; Chem. Abs., vol. 43, 1949, p. 2412.

        Similar experiment to that previously described (abs. 2197), in which Fe was used instead of Co, was carried out at 0°-306°.  When t/x is plotted against t for each temperature on straight line for 0° and 30° was obtained, and one broken line (broken at 1 point) for temperatures above 60°, except 99.6°, for which no line or lines were obtained, leading to 1 or 2 sets of values of A and K.  It is concluded that H₂ is adsorbed by Fe in the dissociated form as by Co, that the surface of Fe is not homogeneous, and adsorption at the centers of the weaker activity is observed at higher temperatures. No reason for the irregularity at 99.6° was found.  Values of A above 150° were much higher than below, which shows that above 150° the number of active centers of adsorption suddenly increases.