Easy synthesis of bimetal PtFe-containing ordered mesoporous carbons and their use as catalysts for selective cinnamaldehydehydrogenation

Abstract

This work focuses on the preparation and characterization of bimetal PtFe-containing ordered mesoporous carbon (PtFe-OMC) materials with different Pt/Fe ratios and their use as the catalysts in selective cinnamaldehyde hydrogenation. The carbon materials were synthesized by means of an easy one-pot organic–organic self-assembly strategy using H₂PtCl₆·6H₂O and Fe(NO₃)₃·9H₂O as the metal precursors. All the samples were characterized by nitrogen adsorption–desorption, X-ray diffraction, X-ray photoelectron spectroscopy, temperature programmed reduction, and transmission electron microscopy, and evaluated for catalytic cinnamaldehyde hydrogenation at various temperatures and H₂ pressures. The results showed that the Pt–Fe alloy nanoparticles were highly dispersed in the OMC matrix, and the presence of Fe resulted in charge-transfer, and thus, enhanced greatly the selective cinnamaldehyde hydrogenation of the Pt catalyst towards cinnamyl alcohol.