2073.     LAZIER, W. A., AND ADKINS, H.  Adsorption of Ethylene and Hydrogen by Zinc Oxide, Iron Oxide, Nickel and Copper.  Jour. Phys. Chem., vol. 30, 1926, pp. 353-358; Chem. Abs., vol. 20, 1926, p. 1545.

        Measurements of the adsorption of H₂ and C₂H₄ at 22° and 74 mm. by catalysts were made in the usual constant-pressure adsorption apparatus.  The catalysts were Cu, Ni, Fe₂O₃, and ZnO, made by several different methods.  The volume of the gas adsorbed was measured by reference to the volume of N₂ required to fill the adsorption apparatus under comparable conditions.  The catalytic activity of the catalysts was determined by measuring the decrease in gas volume after exposing the catalyst to equimolecular mixtures of H₂ and C₂H₄.  The results of the adsorption and catalytic activity measurements indicate that there is a qualitative agreement between the 2 manifestations of chemical activity, but there is apparently no quantitative relationship between total adsorption and catalytic activity.

        LEACH, J. R.  See abs. 654a.

        LECKY, J.  See abs. 53b.