Sodium tungstate immobilized on plasma-treated PVDF membranes: New efficient heterogeneous catalyst for oxidation of secondary amines to nitrones (Articolo in rivista)

Type
Label
  • Sodium tungstate immobilized on plasma-treated PVDF membranes: New efficient heterogeneous catalyst for oxidation of secondary amines to nitrones (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.molcata.2007.03.065 (literal)
Alternative label
  • Buonomenna, M. G., Lopez, L.C., Barbieri. G., Favia, P., d' Agostino, R., Drioli, E. (2007)
    Sodium tungstate immobilized on plasma-treated PVDF membranes: New efficient heterogeneous catalyst for oxidation of secondary amines to nitrones
    in Journal of molecular catalysis. A, Chemical (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Buonomenna, M. G., Lopez, L.C., Barbieri. G., Favia, P., d' Agostino, R., Drioli, E. (literal)
Pagina inizio
  • 32 (literal)
Pagina fine
  • 38 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 273 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute on Membrane Technology, National Research Council of Italy, ITM-CNR, c/o University of Calabria, via P. Bucci cubo 17/C, 87030 Rende (CS), Italy Department of Chemistry, University of Bari, via Orabona 4, 70126 Bari, Italy Institute of Inorganic Methodologies and Plasmas IMIP-CNR, via Orabona 4, 70126 Bari, Italy (literal)
Titolo
  • Sodium tungstate immobilized on plasma-treated PVDF membranes: New efficient heterogeneous catalyst for oxidation of secondary amines to nitrones (literal)
Abstract
  • New heterogeneous oxidation catalysts have been obtained by immobilizing sodium tungstate (Na2WO4) on plasma-treated poly(vinyldene difluoride) (PVDF) membranes. This new generation of catalytically active membranes has been developed by coupling the advantages of low temperature plasma modification processes with surface chemical immobilization reactions of catalysts. Polymeric membranes with different thicknesses, morphologies and pore dimensions were prepared by a non-solvent induced phase inversion technique. Then the surface of the membranes have been surface modified with NH3 radiofrequency glow discharges in order to graft active amino groups for immobilizing sodium tungstate in a stable way. The new catalytic membranes were successfully used for the oxidation of secondary amines to nitrones in a flat membrane reactor. A conversion to nitrone of 100% in less than 3 h (comparable to the homogeneous system) was achieved with the membrane having smallest pore diameter and finger like morphology. (literal)
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