Article (Scientific journals)
Préparation, caractérisation et réactivité de l'acide 1-vanado-11-molybdo-phosphorique supporté sur des matériaux silicatés mésoporeux dans l'oxydation du propène
Benadji, S.; Eloy, P.; Léonard, Alexandre et al.
2012In Comptes Rendus Chimie, 15 (8), p. 658-668
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Keywords :
Heterogeneous catalysis; Mesoporous materials; Oxidation; Polyoxometalates; Supported catalysts
Abstract :
[en] The H 4PMo 11VO 40 heteropolyacid (HPA) was supported at 30 wt.% by the dry impregnation method on HMS, CMI-1 and SBA-15 mesoporous materials. The state of the HPA and those of the supports were examined by nitrogen physisorption, X-ray diffraction, (DR) FT-IR and X-ray photoelectron spectroscopies, thermal analysis (TG-ATD) and scanning electron microscopy (SEM). The effect of support on the catalytic behavior of H 4PMo 11VO 40 was studied in the propene oxidation at 350 °C. It was shown that the presence of H 4PMo 11VO 40, modifies the textural properties of mesoporous materials (decrease of surface area) without destroying their structure. The interaction support-heteropolyacid leads to the formation of (SiOH 2+)(H 3PMo 11VO 40 -) surface species more stable than H 4PMo 11VO 40 species and that appear to be the active sites in the propene oxidation. © 2012 Published by Elsevier Masson SAS on behalf of Academie des sciences.
Disciplines :
Chemistry
Author, co-author :
Benadji, S.;  Laboratoire de Chimie du Gaz Naturel, Faculté de Chimie, Université des Sciences et de la Technologie Houari-Boumediene (USTHB), BP 32 El-Alia, 16111 Bab-Ezzouar, Alger, Algeria, Institute of Condensed Matter and Nanosciences (IMCN), Division Molecules, Solids and Reactivity (MOST), Université Catholique de Louvain, Croix du Sud 2/17, 1348 Louvain-la-Neuve, Belgium
Eloy, P.;  Institute of Condensed Matter and Nanosciences (IMCN), Division Molecules, Solids and Reactivity (MOST), Université Catholique de Louvain, Croix du Sud 2/17, 1348 Louvain-la-Neuve, Belgium
Léonard, Alexandre  ;  Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Chimie > Laboratoire de Chimie des Matériaux Inorganiques
Su, B.-L.;  Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Chimie > Chimie des Matériaux Inorganiques
Rabia, C.;  Laboratoire de Chimie du Gaz Naturel, Faculté de Chimie, Université des Sciences et de la Technologie Houari-Boumediene (USTHB), BP 32 El-Alia, 16111 Bab-Ezzouar, Alger, Algeria
Gaigneaux, E. M.;  Institute of Condensed Matter and Nanosciences (IMCN), Division Molecules, Solids and Reactivity (MOST), Université Catholique de Louvain, Croix du Sud 2/17, 1348 Louvain-la-Neuve, Belgium
Language :
French
Title :
Préparation, caractérisation et réactivité de l'acide 1-vanado-11-molybdo-phosphorique supporté sur des matériaux silicatés mésoporeux dans l'oxydation du propène
Alternative titles :
[en] Preparation, characterization and reactivity of 1-vanado-11-molybdo- phosphoric acid supported on mesoporous silicate materials in the propene oxidation
Publication date :
2012
Journal title :
Comptes Rendus Chimie
ISSN :
1631-0748
eISSN :
1878-1543
Publisher :
Elsevier Masson, Paris, France
Volume :
15
Issue :
8
Pages :
658-668
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 January 2013

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