3030a.     ---------------.  [SASTRI, M. V. C., AND SRIKANT, H.]  Mixed Adsorption of Hydrogen and Nitrogen at Elevated Pressures on a Promoted-Iron Synthetic-Ammonio Catalyst.  Current Sci., vol. 20, 1951, pp. 15-16; Chem. Abs., vol. 45, 1951, p. 10018.

        An Fe-K2O-Al2O3-TiO2 catalyst was used.  The individual adsorption of H2 and N2 from a 3:1 mixture were determined on the same catalyst at 50°-350° and at a total gas pressure up to 50 atm.  Adsorption of H2 from the mixture increased regularly with its partial pressure at all the temperatures studied, whereas that of N2 exhibited this regularity only at the highest temperature.  In practically every case the adsorption of H2 at a given partial pressure from the mixture was considerably higher than that from the pure gas at an equivalent pressure.  Similarly, except at 203° and 300°, N2 adsorption was increased in the presence of H2.  At 350° when the partial pressure of N2 exceeded 7 atm., the ratio of the respective increments of N2 and H2 adsorption varied successively from 1 N:1 H, through 1 N:2 H, to finally 1 N:3 H.  These observations suggested the successive formation of -NH-, -NH2, and NH3 complexes on the active surface of the catalyst.

        SASTRY, S. L.  See abs. 1185.

        SATO, K.  See abs. 12.