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Nitrogen-rich copolymeric microsheets supporting copper nanoparticles for catalyzing arylation of N-heterocycles

Paper ID Volume ID Publish Year Pages File Format Full-Text
41409 45888 2011 8 PDF Available
Title
Nitrogen-rich copolymeric microsheets supporting copper nanoparticles for catalyzing arylation of N-heterocycles
Abstract

Nitrogen-rich copolymeric microsheets were synthesized through incomplete condensation of melamine and cyanuric chloride. The materials can be well-dispersed in polar solvent and perform excellently as supports or stabilizing agents for metal nanoparticles. The presence of nitrogen in the lattice improves their interaction with the copper nanoparticle precursor (Cu(II) ions). Monodispersed copper nanoparticles over these supports were obtained after reducing the absorbed precursors. The materials were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The catalytic C–N coupling reaction was selected as the model reaction to evaluate the catalytic performance of the supported nanoparticles. The catalysts show above 90% yield of coupling products and retain activity after a five-run recycling test. Surface chemistry and morphology transforming during the catalytic process was further investigated. Nitrogen-rich copolymeric microsheets were proven to be excellent supports and stabilizing agents for metal nanoparticles.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (131 K)Download as PowerPoint slideHighlights► Nitrogen-rich copolymeric microsheets were synthesized through controlled condensation of nitrogen-rich precursors. ► Monodispersed filigree copper nanoparticles over such nitrogen-rich substrate were obtained. ► The supported nanoparticles show high activity for catalyzing arylation for N-heterocycles. ► The catalyst retains considerable activity after a five-run recycling test.

Keywords
Heterogeneous catalysis; Nanomaterials; Surface chemistry; Copper; Arylation
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Nitrogen-rich copolymeric microsheets supporting copper nanoparticles for catalyzing arylation of N-heterocycles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 403, Issues 1–2, 22 August 2011, Pages 104–111
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us