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EnglishMCM-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 obtained solids were calcined at 600 ◦C for 4 h. Mn-MCM-41 powders with different Mn/Si molar ratios were prepared using the incipient wetness method, followed by calcination at 550 ◦C for 5 h. At the end of the impregnation process the powders colour changed from white to brown whose intensity depends on manganese 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 effects of the manganese quantity and of the structural characteristic of the MCM-41 support were studied. The catalytic activity of the prepared systems was evaluated in a complete n-hexane oxidation.
| Data di pubblicazione: | 2011 |
| Titolo: | Synthesis, Characterization and Catalytic Activity of mesoporous Mn-MCM-41 materials |
| Autori: | |
| Citazione: | Saladino, M., Kraleva, E., Todorova, S., Spinella, A., Nasillo, G., & Caponetti, E. (2011). Synthesis, Characterization and Catalytic Activity of mesoporous Mn-MCM-41 materials. JOURNAL OF ALLOYS AND COMPOUNDS, 509, 8798-8803. |
| Rivista: | |
| Digital Object Identifier (DOI): | 10.1016/j.jallcom.2011.06.078 |
| Abstract: | 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 obtained solids were calcined at 600 ◦C for 4 h. Mn-MCM-41 powders with different Mn/Si molar ratios were prepared using the incipient wetness method, followed by calcination at 550 ◦C for 5 h. At the end of the impregnation process the powders colour changed from white to brown whose intensity depends on manganese 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 effects of the manganese quantity and of the structural characteristic of the MCM-41 support were studied. The catalytic activity of the prepared systems was evaluated in a complete n-hexane oxidation. |
| Settore Scientifico Disciplinare: | Settore CHIM/02 - Chimica Fisica |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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