1965 Volume 38 Issue 10 Pages 1716-1719
A reaction mechanism for the catalytic isotopic hydrogen exchange of propene with deuterium oxide on palladium has been offered on the basis of the observed reaction rate and activation energy.
It has been concluded from the observed similarity in the dy-distribution and infrared spectra of the products at different temperatures that the exchange rates of the six hydrogen atoms in propene are nearly equal, while their activation energies are all 9 kcal./mol.
The exchange of methyl hydrogen atoms has been estimated to occur according to the double-bond migration mechanism as well as the dissociation mechanism.
A difference in catalytic activity has been found between palladium and nickel, even when their dy-distributions are nearly the same.
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