hcp-phased Ni nanoparticles with generic catalytic hydrogenation activities toward different functional groups
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Mao, X
Gong, W
Wang, D
Chen, C
Liu, P
Lin, Y
Wang, G
Zhang, H
Du, A
Zhao, H
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Abstract
Catalytic hydrogenation is a vital industrial means to produce value-added fuels and fine chemicals, however, requiring highly efficient catalysts, especially the nonprecious ones. To date, the majority of high-performance industrial hydrogenation catalysts are made of precious metals-based materials, and any given catalyst could only be used to catalyze one or few specific reactions. Herein, we exemplify a crystal phase engineering approach to empower Ni nanoparticles (NPs) with superb intrinsic catalytic activities toward a wide spectrum of hydrogenation reactions. A facile pyrolysis approach is used to directly convert a Ni-imidazole MOF precursor into hexagonal close-packed (hcp)-phased Ni NPs on carbon support. The as-synthesized hcp-phased Ni NPs exhibit unprecedented hydrogenation catalytic activities in pure water towards nitro-, aldehyde-, ketone-, alkene- and N heterocyclic-compounds, outperforming the face-centered cubic (fcc)-Ni counterpart and the reported transition metals-based catalysts. The density functional theory calculations unveil that the presence of hcp-Ni boosts the intrinsic catalytic hydrogenation activity by coherently enhancing the substrate adsorption strength and lowering the reaction barrier energy of the rate-determining step. We anticipate that the crystal phase engineering design approach unveiled in this work would be adoptable to other types of reactions.
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Science China Materials
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Nanotechnology
Macromolecular and materials chemistry
Materials engineering
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Lv, Y; Mao, X; Gong, W; Wang, D; Chen, C; Liu, P; Lin, Y; Wang, G; Zhang, H; Du, A; Zhao, H, hcp-phased Ni nanoparticles with generic catalytic hydrogenation activities toward different functional groups, Science China Materials, 2021