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Return to Abstracts of Literature 1750-1999

Literature Abstracts

 1806.    KOBOZEV, N. I., EROFEEV, B. V., KAVERIN, I. B., AND BOGOYAVLENSKAYA, A. N.  [Mechanism of the Promotion Action of Iron Ammonia Catalysts.]  Acta Physicochim.  U.R.S.S., vol. 1, 1934, pp. 483-492; Chem. Abs., vol. 29, 1935, p. 7774.

        Promoting action of Al₂O₃ and MgO on FeO was studied from the viewpoint of mixed crystals between the promoter and the initial Fe oxide.  The formation of mixed crystals is not enough, in itself, to cause the promoting action.  It was proposed that it was necessary for a promoter to be surface-active with regard to the initial mass of the catalyst.  A pronounced difference between the surface tension of Fe₃O₄ and Fe₃O₄+Al₂O₃ and an absence of such a difference between FeO and FeO+MgO as confirmed by the catalytic activity of Fe reduced from these oxides was experimentally shown.