HYDROGEN-DEUTERIUM INVERSE ISOTOPE EFFECT MEASURED FOR THE C-O BOND DISSOCIATION PROCESS IN THE METHANATION ON SUPPORTED NOCKEL CATALYSTS

Article abstract of DOI:10.1246/cl.1981.831

A hydrogen-deuterium inverse isotope effect was found for the C-O bond dissociation process in the methanation of adsorbed CO on a Ni catalyst using a pulse technique; the average value of k_H/k_D was 0.75.Such an effect (0.77) was also found for the steady-state reaction of the CO methanation.It was shown that the adsorbed CO molecule is partially hydrogenated before the C-O bond dissociation.