2886.     ---------------.  [ROGINSKIĬ, S. Z.]  [Theoretical Principles of the Preparation of Catalysts.  II.  Conditions for Utilization of Supersaturation of Reactions in the Preparation of Catalysts.]  Jour. Appl. Chem. (U.S.S.R.), vol. 17, 1944, pp. 97-106; Chem. Abs., vol. 39, 1945, p. 1350.

        Excess free energy, that is, supersaturation, of the reaction in the preparation of catalysts is the source of the catalytically active structures in the final product.  A theoretical discussion shows that concentration and temperature are essential factors in the preparation of catalyst masses.  The usual methods of catalyst preparation are classified and analyzed as to phase conditions in the course of topochemical reactions.  A preliminary guide is indicated for selection of the interval during which the application of high supersaturation is most effective.

        ----------.  See abs. 703, 1709.