Abstract
The exchange reactions of cyclopentane and methane with deuterium were performed on Ni-, Ir- and Pt-catalysts with varying metal particle sizes. The results indicate that catalysts with very small metal particles are less able to form multiple metal-carbon bonds (αα, ααα, etc.) and have a lower hydrogenolytic activity than catalysts with large particles. The higher resistance of small metal particles to self-poisoning by carbon(aceous) layers was also observed.
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