Novel catalytic membranes were developed by coupling low-temperature plasma treatments with the chemical immobilization of W-based catalysts. Poly(vinylidene fluoride) membranes were pre-treated with Ar, and then treated with NH3 RF glow discharges in order to obtain a surface rich in amino groups, which are suitable anchor sites for the immobilization of tungsten-based heterogeneous catalysts. In particular, (WO42-), we have focused our interest on tungstate ions 4 which catalyze the oxidation of secondary amines to nitrones, and on decatungstate (W10O324-) and phospho tungstate (W12PO403-) ions, which can both be used as catalysts for the degradation of organic pollutants such as phenol.
Immobilization of tungsten catalysts on plasma modified membranes
FAVIA, Pietro;
2007-01-01
Abstract
Novel catalytic membranes were developed by coupling low-temperature plasma treatments with the chemical immobilization of W-based catalysts. Poly(vinylidene fluoride) membranes were pre-treated with Ar, and then treated with NH3 RF glow discharges in order to obtain a surface rich in amino groups, which are suitable anchor sites for the immobilization of tungsten-based heterogeneous catalysts. In particular, (WO42-), we have focused our interest on tungstate ions 4 which catalyze the oxidation of secondary amines to nitrones, and on decatungstate (W10O324-) and phospho tungstate (W12PO403-) ions, which can both be used as catalysts for the degradation of organic pollutants such as phenol.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.