3501.     TURKEVICH, J., SCHESSLER, D. O., AND IRSA, A. P.  Study of the Interaction of Ethylene and Deuterium.  Nuclear Sci. Abs. 4, No. 19, Oct. 15, 1950, p. 842.

        Interaction of C₂H₄ and D₂ can take place by addition or exchange.  These reactions are studied by mass spectrographic analysis of the various deutero-ethylenes and deutero-ethanes and the H₂-D₂ gas during the catalytic conversion of ethylene into ethanes.  The results obtained for the interaction of ethylene with 2 vol. D₂ on a Ni wire at 90° C. show that exchange is more rapid than addition, and that the concentration of light ethylene decreases exponentially, but that of the substituted ethylene goes through a maximum before it finally reaches O.  A surprising result is the discovery of completely light ethane from the reaction of ethylene and D₂.  These results suggest that the ethylene hydrogenation is effected by the H₂ that as previously on other ethylene, and only indirectly by the H₂ mol.  The point is being further investigated, and the mechanism formulation is being reserved until the kinetic investigations are completed.

        TURNER, G.  See abs. 329.