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Ionic liquid-based ordered mesoporous organosilica-supported copper as a novel and efficient nanocatalyst for the one-pot synthesis of Biginelli products

Elhamifar, D ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.micromeso.2014.11.011
  3. Abstract:
  4. The preparation, characterization and catalytic application of a novel copper-loaded ionic liquid-based periodic mesoporous organosilica (Cu@PMO-IL) are described. The mesoporous structure of the Cu@PMO-IL material is characterized by transmission electron microscopy (TEM) and nitrogen adsorption-desorption analysis. The thermal stability of the material is also determined by thermal gravimetric analysis (TGA). The presence of copper species in the material framework is confirmed by X-ray photoelectron spectroscopy (XPS) and elemental analysis (EA). The catalytic application of Cu@PMO-IL nanocatalyst is then investigated in the Biginelli condensation of different aldehydes with urea and alkylacetoacetates under solvent-free conditions and at moderate temperature. Moreover, the stability, reactivity and reusability of the catalyst are improved under applied reaction conditions
  5. Keywords:
  6. Copper nanocatalyst ; Periodic mesoporous organosilica ; Catalysts ; Computer software reusability ; Copper ; Gas adsorption ; Gravimetric analysis ; Liquids ; Mesoporous materials ; Reusability ; Silica ; Synthesis (chemical) ; Thermodynamic stability ; Thermogravimetric analysis ; Transmission electron microscopy ; Urea ; X ray photoelectron spectroscopy ; Biginelli reaction ; Nano-catalyst ; Nitrogen adsorption desorption ; Ordered mesoporous organosilica ; Periodic mesoporous organosilicas ; Recoverable and reusable catalyst ; Solvent free conditions ; Thermal gravimetric analyses (TGA) ; Ionic liquids
  7. Source: Microporous and Mesoporous Materials ; Volume 204, Issue C , 2015 , Pages 269-275 ; 13871811 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S1387181114006544