What question did this study set out to answer?

This research focuses on creating effective non-noble metal catalysts for the hydrogenation of quinoline under mild conditions.

May 9, 2026Nano Research0 citationsOpen Access

Cu nanoparticles coated with porous N-doped carbon for the selective hydrogenation of quinolines under mild conditions

GWGuanyu Wang ZZZan ZhangGuangxi Center for Disease Prevention and Control TWTaofen Wang

Key Points

This research focuses on creating effective non-noble metal catalysts for the hydrogenation of quinoline under mild conditions.
Synthesis of N-doped porous carbons with Cu nanoparticles using Cu-MOF precursor via pyrolysis.
Characterization of catalyst using PXRD, SEM, TEM, Raman spectroscopy, XPS, EDS, and DFT calculations.
Testing the catalytic performance in hydrogenation reactions with ammonia borane as hydrogen source.
Cu@NC-900 catalyst showed high activity and chemo-selectivity in the hydrogenation of quinoline.
Improvements in catalytic performance due to the doping of N and the dispersion of Cu species on the catalyst.
Demonstrated excellent recoverability of the catalyst after multiple reactions.

Abstract

The rational design and construction of high-performance heterogeneous non-noble metal catalysts is an urgent need for the practical application of selective hydrogenation of quinoline and its derivatives. In this work, N-doped porous carbons encapsulated highly-dispersed Cu nanoparticles catalyst (Cu@NC-900) was synthesized by pyrolysis of Cu-MOF precursor, based on the design concept of high efficiency, low cost and excellent durability. Interestingly, the Cu@NC-900 catalyst exhibits extremely high activity, chemo-selectivity and recoverability for the hydrogenation of quinoline and its derivatives using ammonia borane as the hydrogen resources under mild conditions. The characterization results of PXRD, SEM, TEM, Raman spectrum, XPS, EDS and density functional theory (DFT) calculations revealed that the doped N and highly-dispersed Cu species in the catalyst can change the electronic density of the catalyst surface, and thus improve the hydrogenation catalytic performance. This study provides a new idea for rational design of high-performance non-noble metal catalysts for hydrogenation of quinolines under mild conditions.

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