1162. GAUGER, A. W., AND TAYLOR, H. S. Influence of Temperature Pressure and Supporting Material for the Catalyst on the Adsorption of Gases by Nickel. Jour. Am. Chem. Soc., vol. 45, 1923, pp. 920-928; Chem. Abs., vol. 17, 1923, p. 1913. Isotherms of the absorption of H2 on Ni, using N2 as a reference gas, show that there exists a definite saturation capacity of Ni for H2 which depends on the temperature. A value of approximately 2,500 cal. per gm. mol. has been deduced from variation of the saturation pressures with temperature for the heat of adsorption of H2 on Ni, whereas by a different method Rideal obtained a value of 12,000 cal. The use of an inert material for catalyst support increases greatly the adsorptive capacity per gm. of Ni and yields a catalyst capable of standing more severe heat treatment. |