3030.     ---------------.  [SASTRI, M. V. C., AND SRIKANT, H.]  Adsorption of Nitrogen at Elevated Pressures on a Promoted Iron Synthetic-Ammonia Catalyst.  Current Sci., vol. 19, 1950, p. 343; Chem. Abs., vol. 45, 1951, p. 7406.

        Adsorption isotherms were determined for N₂ on an Fe-K₂O-Al₂O₃-TiO₂ catalyst at 7 temperatures 50°-350°, and 15-50 atm.  Adsorption at lower pressures (20 and 30 atm.) exhibits only 2 maxima at 150° and 300°, respectively; however, at 50 atm., 3 maxima are observed, 100°, 200°, and 300°.  For an adsorption of 0.05-0.15 cc. per gm. at 20 atm., a value of 23 kcal. is obtained for the isobaric heat of adsorption.