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

Maria Luisa Saladino, Giorgio Nasillo, Eugenio Caponetti, Elka Kraleva, Silvia Todorova, Alberto Spinella

Risultato della ricerca: Article

11 Citazioni (Scopus)

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 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.
Lingua originaleEnglish
pagine (da-a)8798-8803
Numero di pagine6
RivistaJournal of Alloys and Compounds
Volume509
Stato di pubblicazionePublished - 2011

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Multicarrier modulation
Catalyst activity
Bromides
Powders
Manganese
Hexane
Surface-Active Agents
Silicon Dioxide
Calcination
Surface active agents
X ray photoelectron spectroscopy
Silica
Nuclear magnetic resonance
Color
Adsorption
X ray diffraction
Oxidation
MCM-41

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cita questo

Synthesis, Characterization and Catalytic Activity of mesoporous Mn-MCM-41 materials. / Saladino, Maria Luisa; Nasillo, Giorgio; Caponetti, Eugenio; Kraleva, Elka; Todorova, Silvia; Spinella, Alberto.

In: Journal of Alloys and Compounds, Vol. 509, 2011, pag. 8798-8803.

Risultato della ricerca: Article

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T1 - Synthesis, Characterization and Catalytic Activity of mesoporous Mn-MCM-41 materials

AU - Saladino, Maria Luisa

AU - Nasillo, Giorgio

AU - Caponetti, Eugenio

AU - Kraleva, Elka

AU - Todorova, Silvia

AU - Spinella, Alberto

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

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