MCM-41 has been synthesized at two different pH using cetyl-trimethylammonium bromide (CTAB)surfactant as template and adding the silica precursor to aqueous solutions containing CTAB. The obtainedsolids were calcined at 600 ◦C for 4 h. Mn-MCM-41 powders with different Mn/Si molar ratios wereprepared using the incipient wetness method, followed by calcination at 550 ◦C for 5 h. At the end of theimpregnation process the powders colour changed from white to brown whose intensity depends onmanganese quantity. The materials characterization was performed by X-ray diffraction, N2 adsorption,29Si Cross Polarization–Magic Angle Spinning NMR, and X-ray Photoelectron Spectroscopy. The effectsof the manganese quantity and of the structural characteristic of the MCM-41 support were studied. Thecatalytic activity of the prepared systems was evaluated in a complete n-hexane oxidation.
|Numero di pagine||6|
|Rivista||Journal of Alloys and Compounds|
|Stato di pubblicazione||Published - 2011|
All Science Journal Classification (ASJC) codes