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IJC-A Vol.49A(03) [March 2010] >


Title: Carbon nanotubes supported palladium catalysts for selective hydrogenation of cinnamaldehyde under atmospheric pressure
Authors: Ge, Changhua
Li, Yan
Zhao, Jie
Zhou, Renxian
Keywords: Catalysts
Supported catalysts
Palladium catalysts
Pd/CNTs catalyst
Selective hydrogenation
Hydrogenation
Cinnamaldehyde
Issue Date: Mar-2010
Publisher: CSIR
IPC CodeInt. Cl.9 B0IJ23/44; C07B35/00
Abstract: Carbon nanotubes supported Pd catalysts have been prepared by an impregnation method with aqueous solution containing a Pd(II) salt. The selective hydrogenation of cinnamaldehyde with the catalysts is studied in ethanol at 30 oC under atmospheric pressure. A comparison has been made with activated carbon and graphite supported Pd catalysts. The results show that all the Pd/CNTs catalysts prepared with different Pd precursors exhibit good catalytic properties. The Pd/CNTs(a) catalyst prepared with Pd(NH3)4Cl2 as Pd precursor shows remarkably high selectivity (90.8%) for the conversion of cinnamaldehyde (92.0%) with 18.1 mmol H2 g-1 min-1 hydrogenation rate. The influence of the solvent polarity and promoter has been investigated. The results demonstrate that highly polar solvent is advantageous for catalytic activity of Pd/CNTs(a) catalyst, while traces of weak base is advantageous for selective hydrogenation of C=C double bond.
Page(s): 281-287
Source:IJC-A Vol.49A(03) [March 2010]

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