Abstract
Reactions of methylcyclopentane hydrogenolysis were performed at 140°C-160°C on two ruthenium catalysts 10%Ru-Al2 O3 - 0.2% RU-Al2 O3 and on two Pt-Ru bimetallic catalysts in order to determine the mechanistic change in hydrogenolysis caused by the interaction between Pt and Ru. The results of this research are explained using the in-situ X-ray absorption spectroscopy analysis which pointed out (9) that a Pt-Ru bimetallic phase in the Ru rich phase is present in the catalyst. As in these experimental conditions platinum is inactive, an activated Pt-Ru clusters , can explain why the values of the selectivity ratio : 3-methylpentane over n-hexane increase when the number of small metal particles also increase. This result shows that a dilution effect does not occur solely if it occurs.
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