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The effect of transition metals (Cr, Mn, Fe, Co and Ni) on the hydrogenation ofcinnamaldehyde over Pt/ZrO_2 catalysts was studied in ethanol at 343K under 2.0MPa H_2 pressure.PtCo/ZrO_2 and PtFe/ZrO_2 catalysts exhibit high selectivity and activity of hydrogenation for C=O(93.8% at 87.3% conversion and 83.6% at 88.6% conversion, respectively), and PtNi/ZrO_2 exhibitshigh selectivity of hydrogenation for C=C (64.3% at 70.6% conversion). In the presence of traceH_2O and NaOH, over the PtNi/ZrO_2 (0.4wt%Ni) catalyst the selectivity to hydrocinnamaldehydereaches 90.6% and the conversion of cinnamaldehyde is 90.5%.
The effect of transition metals (Cr, Mn, Fe, Co and Ni) on the hydrogenation of cinnamaldehyde over Pt / ZrO_2 catalysts was studied in ethanol at 343K under 2.0MPa H_2 pressure. PtCo / ZrO_2 and PtFe / ZrO_2 catalysts exhibit high selectivity and activity of hydrogenation for C═O (93.8% at 87.3% conversion and 83.6% at 88.6% conversion, respectively), and PtNi / ZrO 2 exhibitshift selectivity for hydrogenation for C═C (64.3% at 70.6% conversion) and NaOH, over the PtNi / ZrO 2 (0.4 wt% Ni) catalyst the selectivity to hydrocinnamaldehyde reaches 90.6% and the conversion of cinnamaldehyde is 90.5%.