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Catalytic hydrogenolysis on metals

Two issues of broad interest in catalysis are reaction mechanisms and comparisons of catalytic activities of different substances. Metal-catalyzed hydrogenolysis reactions of simple molecules provide examples in which both issues have been investigated in some detail. While hydrogenolysis of carbon-carbon bonds in alkanes has received most of the attention to date, some work has also been reported on the hydrogenolysis of carbon-nitrogen bonds in amines and of carbon-halogen bonds in alkyl halides. General mechanistic features of hydrogenolysis reactions on metals and comparisons of catalytic activities of metals for such reactions are considered in this brief review.