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Literature Abstracts

 1653.    KAGAN, M. Y., MOROZOV, N. M., AND PODUROVSKAYA, O. M.  [Sorptive Properties of Mixed Catalysts.  I.  Sorption of Ammonia on Synthetic-Ammonia Catalysts in Connection with the Function of Promoters.]  Jour. Phys. Chem. (U.S.S.R.), vol. 8, 1936, pp. 677-688; Chem. Abs., vol. 31, 1937, p. 2078.

        Pure Al₂O₃ has a high adsorptive capacity for NH₃ up to 600°-700°, with a heat of adsorption of 30 cal. per mol. for 2 cm.³ per gm. Al₂O₃, or 18 cal. for 6 cm.³ per gm. of Al₂O₃.  In the adsorption layer at 500°, NH₃ breaks up into H and a surface-bound radical.  Addition of K₂O to the Al₂O₃ decreases the sorptive capacity and the heat of adsorption to about 2/3.  Fe additions also decrease adsorption to about 1/3, with smaller effect at higher temperatures.

       KAGAN, Y. B.  See abs. 152, 152a.

       KAGONOVA, E. M.  See abs. 2714.