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Literature Abstracts

 1537.    ---------------.  [IIZIMA, S.]  [Sorption of Hydrogen by Reduced Nickel.  IV.  The Velocity of Sorption of Hydrogen at the Early Stage.]  Sci. Papers Inst. Phys. Chem. Research (Tokyo), vol. 26, 1935, pp. 45-69; Chem. Abs., vol. 29, 1935, p. 3893.

       Rate of sorption of H2 by reduced Ni was measured at 0, 10, 21, 30, 40, 50, 60, 70 and 100 for various pressures of H2.  Except for the first 15 sec. after the introduction of H2 rate of sorption was followed up to 90 min.  The results indicate 3 types of sorption.  A rapid adsorption of the van der Waals type occurred during the 1st minute or 2.  This was followed by a period of activated adsorption.  Slow diffusion then followed and this was attributed to the diffusion of H from the surface to the interior of the metal as well as the slow distribution of H over the surface of the metal.