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- W2996719076 abstract "Nickel is a highly active catalyst for the semi-hydrogenation of alkynes. However, the low selectivity of the alkene product caused by the over-hydrogenation reaction on Ni has hindered its practical applications. In this work, we report a new nickel nitride (Ni3N)-catalyzed semi-hydrogenation of alkynes to the corresponding alkenes. The Ni3N nanorods were facilely fabricated via a direct pyrolysis of the solid mixture of nickel acetate tetrahydrate and melamine (Mlm). The Ni3N phase in the optimum catalyst (Ni3N/NC-6/5-550) is shown to be effective and stable in the semi-hydrogenation of alkynes, with a high yield and good selectivity for alkenes (Z/E ratios up to >99/1). Both terminal and internal alkynes bearing a broad scope of functional groups are readily converted into alkenes with good chemo- and stereoselectivity. Notably, it was found that the over-hydrogenation can be markedly suppressed even at high conversion of alkyne. Density functional theory (DFT) calculations reveal that the low interaction between the alkene product and the Ni3N might plays a critical role in the selectivity enhancement." @default.
- W2996719076 created "2019-12-26" @default.
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- W2996719076 date "2020-02-01" @default.
- W2996719076 modified "2023-10-14" @default.
- W2996719076 title "Fabrication of Ni3N nanorods anchored on N-doped carbon for selective semi-hydrogenation of alkynes" @default.
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- W2996719076 doi "https://doi.org/10.1016/j.jcat.2019.12.005" @default.
- W2996719076 hasPublicationYear "2020" @default.
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