Journal
CATALYSTS
Volume 9, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/catal9050404
Keywords
aromatic nitrocompounds; aromatic amines; palladium nanoparticles; catalyst; reduction; carbon monoxide; pyridine derivatives
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Funding
- National Science Centre-Poland [2014/15/B/ST4/04835]
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The transformation of aromatic nitrocompounds into amines by CO/H2O is catalyzed by palladium(II) complexes. Recently, we have proposed that the catalytic cycle includes Pd-0 as the transient intermediate and herein, for the first time, we describe the application of palladium nanoparticles (PdNPs) stabilized by monodentate N-heterocyclic ligands as nanocatalysts facilitating the reduction of Ar-NO2 into Ar-NH2 by CO/H2O. Among the seriesPd(II) complexes, PdNPs and commercial Pd(black)the highest catalytic activity was observed for PdNPs (3.0 +/- 0.5 nm) stabilized by 4-Me-pyridine in the presence of 2-Cl-pyridine. The results may be helpful for mechanistic considerations on the role of metallic nanoparticles as active species in other organic processes.
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