Abstract
The effects of the modification of supported platinum as a constituent of reforming Pt/Al2O3 and Pt-Re/Al2O3 catalysts by introducing zirconium, which was obtained from various starting compounds, into the composition of the support were studied. These effects were most pronounced if difficult-to-hydrolyze compounds served as a source of zirconium. It was found that zirconium affected the metal-support interaction strength, which is responsible for the formation of the most strongly adsorbed hydrogen species (over the temperature range of 300–500°C). This suggests a change in the electronic state of platinum under the action of zirconium. Platinum sites became more regular; as a result of this, the reaction rate parameters of heptane conversion changed.
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