Cobalt nanoparticles supported on N-doped mesoporous carbon as a highly efficient catalyst for the synthesis of aromatic amines
The Co/mCN-900 catalyst that was prepared by simple one-pot pyrolysis of the homogeneous mixture of melamine, polyacrylonitrile and Co(NO3)2·6H2O under N2 atmosphere can be used for catalytic hydrogenation of nitroarenes and direct reductive N-alkylation of nitroarenes with carbonyl compounds. [Disp...
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Published in | Journal of colloid and interface science Vol. 501; pp. 231 - 240 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Elsevier Inc
01.09.2017
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Subjects | |
Online Access | Get full text |
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Summary: | The Co/mCN-900 catalyst that was prepared by simple one-pot pyrolysis of the homogeneous mixture of melamine, polyacrylonitrile and Co(NO3)2·6H2O under N2 atmosphere can be used for catalytic hydrogenation of nitroarenes and direct reductive N-alkylation of nitroarenes with carbonyl compounds.
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Inexpensive and reusable transition metal heterogeneous catalysts exhibiting excellent catalytic performance represent an attractive alternative to noble metal and homogeneous catalysts. In this work, we fabricated a novel nanocatalyst comprised of Co nanoparticles (NPs) supported on a N-doped mesoporous carbon (Co/mCN-900) by simple one-pot pyrolysis of a homogeneous mixture of melamine, polyacrylonitrile, and Co(NO3)2·6H2O under a N2 atmosphere at 900°C. The as-obtained Co/mCN-900 catalyst displayed a fluffy mesoporous structure with highly dispersed and accessible Co NPs acting as catalytic active sites. The Co/mCN-900 catalyst was effective in hydrogenating nitroarenes at milder conditions (i.e., 1MPa H2 and 120°C) as compared to previously reported Co- and Ni-based catalysts. The Co/mCN-900 catalyst also catalyzed the reductive N-alkylation of nitroarenes with carbonyl compounds to form the corresponding aromatic secondary amines under very mild reaction conditions. In addition, the Co/mCN-900 catalyst showed good reusability since its morphology and activity were maintained after several reaction cycles. Therefore, this work provides a facile and promising method for fabricating non-precious transition metal-based catalysts with excellent performance and great potential for sustainable chemistry applications. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0021-9797 1095-7103 |
DOI: | 10.1016/j.jcis.2017.04.053 |