3154a.     SEITZ, F.  Fundamental Principles of Catalytic Activity.  Advances in Catalysis, Academic Press, Inc., New York, 1950, vol. 2, pp. 1-19.

        Activity of heterogeneous solid catalysts is discussed.  Energy surface, isomeric and more complex reactions and characteristics of solid catalysts are described.  Solids are classified into 4 types:  Valence crystals, metals, ionic crystals, and molecular crystals.