2818.     RIDEAL, E. K.  Note on a Simple Molecule Mechanism for Heterogeneous Catalytic Reaction.  Proc. Cambridge Phil. Soc., vol. 35, 1939, pp. 130-132.

        Proposed mechanism involves 2 assumptions:  (1)  That surface catalytic reactions take place between a chemisorbed radical or atom and a molecule derived from the gas phase; (2) that in the interaction between the 2 species the covalent bond between the chemisorbed constituent and substrate either is not broken or is converted into the van der Waals bond.