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.

Saladino, M.L., 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 [10.1016/j.jallcom.2011.06.078].

Synthesis, Characterization and Catalytic Activity of mesoporous Mn-MCM-41 materials

SALADINO, Maria Luisa;SPINELLA, Alberto;NASILLO, Giorgio;CAPONETTI, Eugenio
2011

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 CHIM/02 - Chimica Fisica
Saladino, M.L., 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 [10.1016/j.jallcom.2011.06.078].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/57627
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