3143.     SCHWAB, G. M., AND ZORN, H.  [Kinetics of the Hydrogenation of Ethylene on Skeleton Contacts.]  Ztschr. physik. Chem., vol. 32, B, 1936, pp. 169-201; Chem. Abs., vol. 30, 1936, p. 4745.

        Activated centers are in the interior of the catalysts.  According to the activity and the temperature, the rate-determining process depends on these activated centers or diffusion through the pores of the material.  For highly dispersed substances, the configuration of the inner surfaces is extremely significant, since their active centers are accessible to gases only by diffusion.

        SCHWAB-AGALLIDIS, E.  See abs. 3142.

        SCHWARTZ, F. G.  See abs. 3595.