期刊
ACS CATALYSIS
卷 5, 期 8, 页码 4783-4789出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b00737
关键词
chemoselective hydrogenation; heterogeneous catalyst; metallic cobalt; nitroarenes; nitrogen
资金
- National Natural Science Foundation of China [21376208]
- Zhejiang Provincial Natural Science Foundation for Distinguished Young Scholars of China [LR13B030001]
- Specialized Research Fund for the Doctoral Program of Higher Education [J20130060]
- Fundamental Research Funds for the Central Universities
- Program for Zhejiang Leading Team of ST Innovation
- Partner Group Program of the Zhejiang University
- Max-Planck Society
The earth-abundant nanohybrids Co-0/Co3O4@N-doped carbon nanotubes were fabricated via an efficient thermal condensation of D-glucosamine hydrochloride, melamine, and Co-(NO3)(2)center dot 6H(2)O. The hybrids furnish excellent catalytic activity and perfect chemoselectivity (>99%) for a wide range of substituted nitroarenes (21 examples) under relatively mild conditions. The high catalytic performance and durability is attributed to the synergistic effects between each component, the unique structure of graphene layers-coated Co-0, and the electronic activation of doped nitrogen. Density functional calculations indicate that the inner Co-0 core and N species on the carbon shell can significantly decrease the dissociation energies of H-2, giving evidence of the ability of carbon shell in the hybrids to enable H-2 activation. These results open up an avenue to design more powerful low-cost catalysts for industrial applications.
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