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Ni–Cu/Al2O3 catalysts for the selective hydrogenation of acetylene: a study on catalytic performance and reaction mechanism

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Abstract

Aiming at the preparation of metal catalysts with nanoscale structures, Ni–Cu/Al2O3 nanoparticle catalysts (i.e., Ni&Cu-NP/γ-Al2O3), containing a certain amount of Ni and Cu were prepared for the hydrogenation of acetylene. The highly dispersed and stable Ni&Cu-NP/γ-Al2O3 catalyst with a Ni : Cu atomic ratio of 1 : 1 was obtained from a NiCl2/CuCl2 precursor by a modified co-precipitation method, the average size of which was controlled at 10.0 ± 0.3 nm. Under optimal reaction conditions, approximately 100% conversion and 71% selectivity at 130 °C were achieved using the Ni&Cu-NP/γ-Al2O3 catalyst. The enhanced selectivity was attributed to the formation of nickel–copper alloys, which have been identified by both diffuse reflectance infrared Fourier transform spectroscopy and theoretical calculation results.

Graphical abstract: Ni–Cu/Al2O3 catalysts for the selective hydrogenation of acetylene: a study on catalytic performance and reaction mechanism

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Publication details

The article was received on 31 Jul 2019, accepted on 18 Oct 2019 and first published on 21 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ03956B
New J. Chem., 2019, Advance Article

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    Ni–Cu/Al2O3 catalysts for the selective hydrogenation of acetylene: a study on catalytic performance and reaction mechanism

    N. Hu, C. Yang, L. He, Q. Guan and R. Miao, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ03956B

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