Influence of the electronic state of the metals in Fe–Pt/SiO2 catalysts on the performance of hydrogenation of phenylacetylene

Iron-modified platinum bimetallic system, 1% Pt–1% Fe/SiO2, provides selective liquid-phase hydrogenation of phenylacetylene into styrene at 70 °C and 5 atm. This effect is attributed to the electron enrichment of the Pt surface atoms due to a charge transfer from Fe to Pt or contact interactions between these two metals, as indicated by XPS and DRIFTS-CO.