Selective hydrogenation of cinnamaldehyde with efficient assembled Pt-Fe/C catalysts

Abstract

Platinum nanoparticles (d=2.0 nm) were obtained by decomposition of Pt2(dba)3 (dba: dibenzalacetone) and captured by active carbon modified with Fe to prepare a Pt-Fe/C catalyst. Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectrometry (EDS) were used to characterize the size, distribution, electronic state of the Pt and Fe nanoparticles, and surface elements of the catalysts. The catalysts selectively hydrogenated cinnamaldehyde (CAL) to cinnamyl alcohol (COL), and the activity was more than one time that of a Pt/C catalyst prepared by the impregnation method. The 1% (w, mass fraction)Pt-1.5% (w)Fe/C catalyst exhibited the highest activity and selectivity at 60 °C, 2.5 h, and 4.0 MPa H 2. The conversion for CAL was 99.2%, and the selectivity of CAL to COL was 85.0%. © Editorial office of Acta Physico-Chimica Sinica.