2597.     ---------------.  [PAVLYUCHENKO, M. M.]  [Reactions Involving Solids in the Absence of Any Catalytic Action of the Reaction Products.]  Jour. Phys. Chem. (U.S.S.R.), vol. 23, 1949, pp. 800-808; Chem. Abs., vol. 43, 1949, p. 8820.

        The corners of a cube are its most reactive points.  If the reaction starts from the corners and proceeds along the diagonals of the cube, the area of the reactive surfaces increases; this explains the usual autocatalytic acceleration of reactions involving solids.  The theory is applicable also to reactions starting at crystal edges.  In both instances, the rate of reaction passes through a maximum.