Abstract
The effect of various concentrations of water and chlorine on the formation of bimetallic particles on commercial Pt-Re/Al 2 O 3 reforming catalysts has been investigated. STEM combined with EDX has been used to directly measure the degree of “alloy” formation in the metal particles. XANES/EXAFS analysis was employed to further elaborate the effect of drying prior to reduction. As an indirect measure of bimetallic particles, chemical characterization techniques such as cyclopentane hydrogenolysis and hydrogen chemisorption were used. The beneficial effect of water on the formation of bimetallic particles has been confirmed. No significant effect of the level of chlorine content prior to reduction was found.
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