Journal
NEW JOURNAL OF CHEMISTRY
Volume 44, Issue 2, Pages 549-555Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj05307g
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Funding
- Special Fund for Basic Scientific Research of Central Colleges, South-Central University for Nationalities [CZZ 19002]
- National Nature Science Foundation of China [2182175]
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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 degrees C and 2.5 bar H-2) 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.
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