Bimetallic catalysts; application in catalytic reforming

The results of several types of studies on platinum-iridium and platinum-rhenium reforming catalysts are reported in this paper. The studies include characterization of the catalysts by chemisorption of hydrogen and carbon monoxide, comparisons of the catalysts for the conversion of selected hydrocarbons and extended runs on the reforming of petroleum naphtha fractions. The results of these studies reveal differences in the nature of the catalysts and in their performance in reforming. The differences in reforming properties are such that the two catalysts can be effectively combined in a reforming operation. In this manner it is possible to take advantage of the desirable properties of both catalysts.