Journal
ACS CATALYSIS
Volume 3, Issue 5, Pages 839-845Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs400077r
Keywords
N-doped carbon; N-heterocyclic carbenes; supported catalysts; nanoparticles; carbonylation
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Funding
- Chinese Academy of Sciences
- National Natural Science Foundation of China [21002106, 21133011]
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In this work, we report a novel and facile procedure for a one-pot preparation of palladium nanoparticle catalysts supported on porous N-doped carbon (Pd@CNT) by direct carbonization of palladium-N-heterocyclic carbene coordination polymer (P-Pd-NHC). This method could be conveniently extended to the synthesis of the Ni and alloy (PdxNiy) nanoparticle catalysts (Ni@CN800 PdxNy@OCN800) The treatment temperature played an important role, on the growth and properties of the resultant M@CNT wherein M@CN800 carbonized at 800 degrees C showed well-monodispersed metal nanoparticles (MNPs), graphene-like layers of the N-doped carbon supports, and strong interaction between MNPs and the support. Pd@CN800 displayed high efficiency and stable recyclability toward the demino carbonylative synthesis of pyrazole derivatives. Interestingly, its catalytic performance has been even higher than that of the representative PdCl2(PPh3)(2) within six runs.
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