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Synfacts 2025; 21(01): 65
DOI: 10.1055/a-2467-5471
Polymer-Supported Synthesis

Nitrogen-Doped Carbon-Encapsulated Ni Nanoparticles for Selective Hydrogenation of Nitroarenes

Contributor(s):
Yasuhiro Uozumi 
,
Shusuke Hattori
Yao Y, Yin C, He W, Zhou Y, Ma C, Liu Y, Li X *, Lu C *. Zhejiang University of Technology, Hangzhou, P. R. China
Strengthened Delocalized Electronic Effect in Nano-Nickel@Carbon with High Pyrrolic Nitrogen for Selective Hydrogenation of Substituted Nitrobenzene Hydrogenation.

ACS Catal. 2024;
14: 14912-14927
DOI: 10.1021/acscatal.4c03995
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Keywords

nitrogen-doped carbon - carbon-encapsulated metal - nickel - hydrogenation - nitroarene

Significance

Nickel nitrate hexahydrate and pyrrole-2-carboxylic acid were subjected to hydrothermal treatment in EtOH/DMF at 140 °C, followed by pyrolysis at 600 °C under argon to give pyrrolic N-doped carbon-encapsulated Ni nanoparticles (Ni@NrC) (eq 1). The thus-formed Ni@NrC then catalyzed the selective hydrogenation of nitroarenes under 1 MPa H2 at 100 °C to afford the corresponding anilines in up to > 99 % conversion and > 99 % selectivity (eq 2).


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Comment

Various functional groups, including aromatic halides (Cl, Br, I) and carbonyls (CHO, CO2Me) were tolerated under the catalytic conditions. The authors proposed that the NC shell should be in an electron-rich state due to the delocalization of Ni electrons being conducive to the adsorption of substrates.


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Publication History

Article published online:
20 December 2024

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