Characterization , acidity and catalytic activity of Ga-SBA-15 materials prepared following differentsynthesis procedures - Conditions Extrêmes et Matériaux : Haute Température et Irradiation Accéder directement au contenu
Article Dans Une Revue Applied Catalysis A : General Année : 2006

Characterization , acidity and catalytic activity of Ga-SBA-15 materials prepared following differentsynthesis procedures

Résumé

Incorporation or grafting of gallium atoms in/on mesoporous SBA-15 silicas was carried out using four different procedures. The structure and texture of the materials obtained were characterised by classical methods (X-ray diffraction, TEM, porosimetry measurements, XPS, 71Ga NMR spectroscopy). Acidity of the solids was evaluated by ammonia adsorption, TPD of this gas and FTIR spectroscopy of adsorbed probes (2,6-dimethylpyridine and deuterated acetonitrile). Catalytic activity was tested first in the isomerisation of a-pinene and second in the oxidative cleavage of cyclohexene oxide. In this latter case, the results are compared with those obtained in the presence of Al-SBA-15 catalysts prepd. under similar conditions.

Domaines

Catalyse
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Dates et versions

hal-00105289 , version 1 (10-10-2006)

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Citer

Leon Gengembre, Benjamin Jarry, Franck Launay, Jean-Philippe Nogier, Valerie Montouillout, et al.. Characterization , acidity and catalytic activity of Ga-SBA-15 materials prepared following differentsynthesis procedures. Applied Catalysis A : General, 2006, 309(2), pp.177-186. ⟨10.1016/j.apcata2006.04.044⟩. ⟨hal-00105289⟩
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