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Mild and selective hydrogenation of nitriles into primary amines over a supported Ni catalyst

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Abstract

The development of new heterogeneous non-noble catalytic systems for the selective hydrogenation of nitriles into primary amines is a challenging task. In this study, a mesoporous Al2O3 supported Ni catalyst (denoted as Ni/Al2O3-600, where 600 represents the reduction temperature) demonstrated a high catalytic activity for the hydrogenation of nitriles under mild conditions (60–80 °C and 2.5 bar H2) with ammonia as the additive. This catalytic system has a wide substrate range and the Ni/Al2O3 catalyst demonstrated a good tolerance to other functional groups, which was possibly due to its high catalytic activity under mild conditions. A plausible reaction pathway was proposed for the hydrogenation of nitriles into primary amines, and it was found that ammonia played a great role in the enhancement of the selectivity of primary amines by the inhibition of the side reaction to generate secondary amines. In addition, the Ni/Al2O3-600 catalyst could be reused five times without activity loss through convenient magnetic recovery.

Graphical abstract: Mild and selective hydrogenation of nitriles into primary amines over a supported Ni catalyst

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Publication details

The article was received on 23 Oct 2019, accepted on 28 Nov 2019 and first published on 29 Nov 2019


Article type: Paper
DOI: 10.1039/C9NJ05307G
New J. Chem., 2020, Advance Article

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    Mild and selective hydrogenation of nitriles into primary amines over a supported Ni catalyst

    J. Wang, Q. Tang, S. Jin, Y. Wang, Z. Yuan, Q. Chi and Z. Zhang, New J. Chem., 2020, Advance Article , DOI: 10.1039/C9NJ05307G

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