Effect of Fe(III) on hydrogenation of citral over Pt supported multiwalled carbon nanotube

Nano-platinum granules were affixed to MWCNTs via a liquid-reduction method. Different methods were utilized to introduce Fe(III) into the Pt/MWCNT catalyst. The influence of Fe(III) on the performance of a selective citral hydrogenation over the Pt/MWCNTs in isopropanol was investigated. Characterization techniques such as XRD, TEM, TPR, XPS and N2 physisorptions were used. Changes in the absorbance and wavenumber for the CO bond in the citral were monitored with a high-pressure in situ infrared spectrometer. When 0.25 wt.% Fe(III) was added, the citral conversion remained unchanged, but the selectivity toward the unsaturated alcohols increased from 33.7 to 90.7%.