2547.     PACE, J., AND TAYLOR, H. S.  Velocities of Adsorption of Hydrogen and Deuterium on Hydrogenation Catalysts.  Jour. Chem. Phys., vol. 2, 1934, pp. 578-580; Chem. Abs., vol. 28, 1934, p. 6606.

        Velocities of adsorption of H¹₂ and of H²₂ are identical on Cr₂O₃, ZnO-Cr₂O₃ and Ni supported on kieselguhr, at 110°, 132°, and 184°.  This process is, therefore, independent of the difference in zero-point energies, of the rate at which the gas molecules strike the surface, and of an activated migration.

        PACHECO, J. R.  See abs. 2137, 2917.