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|Title:||Hydrogenation of cinnamaldehyde over Pt/ZrO2 catalyst modified by Cr, Mn, Fe, Co, Ni and Sn|
|IPC Code:||Int. Cl.8 B01J 23/42; B01J27/135|
|Abstract:||Hydrogenation of cinnamaldehyde (CMA) has been studied over Pt/ZrO2 and PtM/ZrO2 calalysts (M= Cr, Mn, Fe, Cu, Ni, Sn) in ethanol at 343 K and 2.0 MPa. The catalytic properties are shown to increase upon introduction of metals to Pt/ZrO2 catalyst. Catalytic activities of the catalysts are enhanced except PtCr/ZrO2 catalyst. PtMn/ZrO2 PtCo/ZrO2, and PtFe/ZrO2 catalysts show good yield of cinnamyl alcohol (CMO), and Pt Ni/ZrO2 PtSn/ZrO2 catalysts show good yield of hydrocinnamaldehyde (HCM A). In the presence of NaOH and H2O, rate of the hydrogenation of CMA increases significantly and side reaction is remarkably inhibited. PtCo/ZrO2 catalyst shows best catalytic activity (TOF 7.4×10-2 s-1) and yield of CMO (84.1mol %). PtNi/ZrO2 catalyst shows best yield of HCMA (62.8 mol %). More active sites for the hydrogenation or C=O group on PtCo/ZrO2 cata1yst surface are the main reason of good selectivity of CMO.|
|Appears in Collections:|| IJC-A Vol.45A(07) [July 2006]|
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