Effects of the Modification of Reforming Alumina–Platinum Catalysts with Zirconium
Статья (Full article),
Kinetics and Catalysis
, E-ISSN: 1608-3210
Институт проблем переработки углеводородов СО РАН
Институт катализа им. Г.К. Борескова СО РАН
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.