References of "Studies in Surface Science and Catalysis"
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See detailImmobilization of homogeneous catalysts in nanostructured carbon xerogels
Gheorghiu, C. C.; Perez-Cadenas, Maria; Roman-Martinez, M. C. et al

in Studies in Surface Science and Catalysis (2010), 175

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See detailFunctionalization of carbon xerogels for the preparation of Pd/C catalysts by grafting of Pd complex
Diverchy, Chantal; Hermans, Sophie; Job, Nathalie ULg et al

in Studies in Surface Science and Catalysis (2010), 175

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See detailSynthesis and characterization of highly loaded Pt/carbon xerogel catalysts prepared by Strong Electrostatic Adsorption method
Job, Nathalie ULg; Maillard, Frédéric; Chatenet, Marian et al

in Studies in Surface Science and Catalysis (2010), 175

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See detailPreparation of CMI-1 supported H3+xPMo12-xVxO40 for the selective oxidation of propylene
Benadji, S.; Eloy, P.; Léonard, Alexandre ULg et al

in Studies in Surface Science and Catalysis (2010), 175

Catalysts, comprising 30 wt.% of heteropolyacids (HPAs) H 3+xPMo 12-xV xO 40 (x = 0-3) supported on a mesoporous material CMI-1 by dry impregnation were characterized by several techniques. Their ... [more ▼]

Catalysts, comprising 30 wt.% of heteropolyacids (HPAs) H 3+xPMo 12-xV xO 40 (x = 0-3) supported on a mesoporous material CMI-1 by dry impregnation were characterized by several techniques. Their catalytic performances were compared to those of bulk HPAs in the propylene oxidation by molecular oxygen at 350°C. The supported HPAs exhibit higher catalytic activity in propylene oxidation than the bulk ones and favoured the formation of acrolein, acetaldehyde and acetic acid, compared to the mother catalysts which lead only to the formation of COx. The enhanced oxidation catalytic activity of supported systems was attributed to the fine dispersion of H 3+xPMo 12-xVxO 40 species on the CMI-1 mesoporous material via physical adsorption, together with the fact that the structure of both CMI-1 and HPAs remained intact during the impregnation. © 2010 Elsevier B.V. All rights reserved. [less ▲]

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See detailCompressing some sol-gel materials reduces their stiffness: a textural analysis
Gommes, Cédric ULg; Job, Nathalie ULg; Blacher, Silvia ULg et al

in Studies in Surface Science and Catalysis (2007), 160

The mechanical behaviour of two series of silica and of resorcinol xerogels is analyzed by mercury porosimetry. The data are expressed as pressure-density curves, which enables textural information to be ... [more ▼]

The mechanical behaviour of two series of silica and of resorcinol xerogels is analyzed by mercury porosimetry. The data are expressed as pressure-density curves, which enables textural information to be obtained. In particular, it is shown that some of the analyzed samples exhibit a marked lowering of their mechanical stiffness upon compression. This observation is analyzed in terms of the collapse of the sample’s porosity and of the heterogeneity of the microstructure. [less ▲]

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See detailOptimized conditions for the preparation of Pt supported catalysts by deposition-precipitation
Cellier, Caroline; Lambert, Stéphanie ULg; Lahousse, C. et al

in Studies in Surface Science and Catalysis (2006), 162

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See detailLarge-scale synthesis and forming of xerogel catalysts
Alié, Christelle ULg; Ferauche, Fabrice; Tcherkassova, Natalia et al

in Studies in Surface Science and Catalysis (2006), 162

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See detailImmobilizing metal nanoparticles in porous silica through sol-gel process
Heinrichs, Benoît ULg; Beketov, Gennadiy; Lambert, Stéphanie ULg et al

in Studies in Surface Science and Catalysis (2006), 162

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See detailMetal catalysts suppported on texture-tailored carbon xerogels
Job, Nathalie ULg; Léonard, Angélique ULg; Colomer, Jean-François et al

in Studies in Surface Science and Catalysis (2006), 162

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See detailThe porous structure of biodegradable scaffolds obtained with supercritical CO2 as foaming agent
Blacher, Silvia ULg; Calberg, Cédric ULg; Kerckhofs, Greet ULg et al

in Studies in Surface Science and Catalysis (2006), 160

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See detailThe porous structure of biodegradable scaffolds obtained with supercritical CO(2) as foaming agent
Blacher, Silvia ULg; Calberg, Cédric ULg; Kerckhofs, Greet ULg et al

in Studies in Surface Science and Catalysis (2006), 160

Poly(epsilon-caprolactone) foams were prepared, via a batch process, by using supercritical CO(2) as foaming agent. Their porous structure was characterized through helium and mercury pycnometry, scanning ... [more ▼]

Poly(epsilon-caprolactone) foams were prepared, via a batch process, by using supercritical CO(2) as foaming agent. Their porous structure was characterized through helium and mercury pycnometry, scanning electron microscopy (SEM) and X-ray microtomography observations coupled with image analysis. The pore size distributions obtained by these two latter techniques show that the pore structure is more homogeneous when the foaming process is performed under a high CO(2) saturation pressure (higher than 250 bars). [less ▲]

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See detailQualitative assessment of the purity of multi-walled carbon nanotube samples using krypton adsorption
Gommes, Cédric ULg; Noville, Francis ULg; Bossuot, Christophe et al

in Studies in Surface Science and Catalysis (2005), 160

Krypton is a subcritical vapour at the nitrogen boiling temperature. As such, its adsorption on crystalline surfaces leads to condensation steps, typical of type VI isotherms according to IUPAC, while its ... [more ▼]

Krypton is a subcritical vapour at the nitrogen boiling temperature. As such, its adsorption on crystalline surfaces leads to condensation steps, typical of type VI isotherms according to IUPAC, while its adsorption on rough surfaces is BET-like. Based on this property of krypton adsorption at 77 K, a methodology is proposed to determine the purity of carbon nanotubes samples. The method is tested on model samples obtained by mixing mechanically purified multi-walled carbon nanotubes with various amounts of the same catalyst as used for their synthesis. [less ▲]

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See detailQuantitative morphological studies of mesoporous catalysts at nanometer scale resolution
Ziese, Ulrike; Gommes, Cédric ULg; Blacher, Silvia ULg et al

in Studies in Surface Science and Catalysis (2005), 158

We have combined electron tomography with posterior image processing for a quantitative morphological study of mesoporous catalysts at nanometer scale resolution. As a first example for the possibilities ... [more ▼]

We have combined electron tomography with posterior image processing for a quantitative morphological study of mesoporous catalysts at nanometer scale resolution. As a first example for the possibilities of the approach, pore size distributions of single particles of commercial USY and XVUSY zeolites were derived. [less ▲]

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See detailControl of ordered mesoporous molecular sieves synthesis using non-ionic surfactants by incorporation of transition metal ions in the micellar solution
Léonard, Alexandre ULg; Blin, Jean-Luc; Herrier, Gontran et al

in Studies in Surface Science and Catalysis (2003), 146

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See detailNanostructured mesoporous TiO2, ZrO2 and SiO2 synthesis by using the non-ionic Cm(EO)n - inorganic alkoxyde system : toward a better understanding on the formation mechanism
Blin, Jean-Luc; Léonard, Alexandre ULg; Gigot, Laurent et al

in Studies in Surface Science and Catalysis (2003), 146

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See detailTowards a better understanding on the mechanism of mesoporous formation via an assembly of C n(EO) m and TMOS
Blin, J. L.; Léonard, Alexandre ULg; Herrier, G. et al

in Studies in Surface Science and Catalysis (2002), 141

The present work deals with a systematic study of mesoporous materials synthesis. A series of polyoxyethylene alkyl ether surfactants such as C 13(EO) n (n = 6, 12, 18), C 16(EO) 10, C 18(EO) 10 have been ... [more ▼]

The present work deals with a systematic study of mesoporous materials synthesis. A series of polyoxyethylene alkyl ether surfactants such as C 13(EO) n (n = 6, 12, 18), C 16(EO) 10, C 18(EO) 10 have been used. It is revealed that the surfactant conformation changed with the heating temperature. Indeed, at higher temperatures, a more extended molecular conformation can be obtained, which leads to materials with larger pore sizes. We have also shown that the interaction between template and silica disturbs the hexagonal array of micelles in solution leading to the formation of DWM-1 or DWM-2 compounds for concentrated micellar solution. We have also correlated the structural characteristics of the recovered mesoporous molecular sieves with the V H/V L ratio of the template. [less ▲]

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See detailAg/SiO2 and Cu/SiO2 cogelled xerogel catalysts for benzene combustion and 2-butanol dehydrogenation
Lambert, Stéphanie ULg; Tcherkassova, Natalia; Cellier, Caroline et al

in Studies in Surface Science and Catalysis (2002), 143

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See detailTexture characterization of ultramacroporous materials using non-destructive methods
Blacher, Silvia ULg; Maquet, Véronique; Léonard, Angélique ULg et al

in Studies in Surface Science and Catalysis (2002), 158

Image analysis, impedance spectroscopy and X-ray microtomography have been used as non-destructive methods in order to characterize ultramacroporous materials (pore width > 1 mum). These methods are used ... [more ▼]

Image analysis, impedance spectroscopy and X-ray microtomography have been used as non-destructive methods in order to characterize ultramacroporous materials (pore width > 1 mum). These methods are used to investigate the texture of different kinds of materials, i.e., highly oriented polylactide (PLA) foams prepared by freeze-drying, isotropic polyolefin foams prepared by thermal degradation of a chemical foaming agent and convective heat dried wastewater sludges. The image analysis of SEM micrographs recorded at different magnifications gave information on the pore size distribution and pore morphology. Impedance spectroscopy was used to investigate the transport properties of the three-dimensional porous matrices by measurement of the water ionic conduction. Finally, 3D image reconstruction from 2D cross-sections obtained by X-ray microtomography allowed visualizing the pore structure. [less ▲]

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See detailIs it possible to obtain a coherent image of the texture of a porous material?
Noville, Francis ULg; Gommes, Cédric ULg; Doneux, C. et al

in Studies in Surface Science and Catalysis (2002), 144

This study consists in verifying the coherence of a few commonly used analysis methods of nitrogen adsorption-desorption isotherms. These methods were tested on model samples obtained by mechanically ... [more ▼]

This study consists in verifying the coherence of a few commonly used analysis methods of nitrogen adsorption-desorption isotherms. These methods were tested on model samples obtained by mechanically mixing two micro- and mesoporous solids respectively with known, mass proportions. Although the individual analysis methods may lead to discrepancies in the interpretation of the isotherms, their systematic comparison allows drawing a coherent picture of the porous texture. [less ▲]

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