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Preparation of Ni/SiO2 catalyst in ionic liquids for hydrogenation

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Abstract

A series of silica supported nickel catalysts were prepared from nickel nitrate and tetraethyl orthosilicate by the sol-gel method with the imidazolium type ionic liquids as solvents. The catalysts were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Their catalytic performances for the selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde were investigated. The results show that the Ni/SiO2 catalyst prepared with 1-(2-hydroxyethyl)-3-methylimidazole tetrafluoroborate ionic liquid as solvent exhibits the highest catalytic activity for the reaction. Under the optimal conditions of catalyst dosage (based on the mass of cinnamaldehyde used) 10%, reaction pressure 2 MPa, temperature 373 K and reaction time 2 h, the conversion of cinnamaldehyde and the selectivity to hydrocinnamaldehyde can reach 97.6% and 98.8%, respectively.

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Authors and Affiliations

  1. State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310032, China

    Qingming Fan, Yingxin Liu, Yifan Zheng & Wei Yan

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  1. Qingming Fan
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  2. Yingxin Liu
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  3. Yifan Zheng
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  4. Wei Yan
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Correspondence to Yingxin Liu.

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Translated from Petrochemical Technology, 2007, 36(1): 9–14 [译自:石油化工]

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Fan, Q., Liu, Y., Zheng, Y. et al. Preparation of Ni/SiO2 catalyst in ionic liquids for hydrogenation. Front. Chem. Eng. China 2, 63–68 (2008). https://doi.org/10.1007/s11705-008-0013-4

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