Promoter effect of platinum on liquid-phase dehydrogenation of 2-propanol by a nickel fine-particle catalyst

A platinum-deposited nickel fine-particle catalyst was shown to be more active than a nickel-alone catalyst. A study of the temperature dependence of a rate constant revealed that platinum increased the frequency factor of the rate constant. An experiment regarding poisoning showed that the number of active sites was the same for the two catalysts. Thus the promoter effect was ascribed to an increase in the frequency factor per active site.