高效组合型Pt-Fe/C 催化剂用于肉桂醛选择性加氢反应

doi:10.3866/PKU.WHXB201202081

Abstract

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 H₂. The conversion for CAL was 99.2%, and the selectivity of CAL to COL was 85.0%.

Key words: Pt, Fe, Active carbon, Cinnamaldehyde, Cinnamyl alcohol, Selective hydrogenation

ZHAO Lei, XU Xiang-Sheng, ZHANG Kai-Chao, YAN Xin-Huan. Selective Hydrogenation of Cinnamaldehyde with Efficient Assembled Pt-Fe/C Catalysts[J].Acta Phys. -Chim. Sin., 2012, 28(04): 923-927.

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Selective Hydrogenation of Cinnamaldehyde with Efficient Assembled Pt-Fe/C Catalysts

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