Reference : In situ SAXS analysis of silica gel formation with an additive
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/688
In situ SAXS analysis of silica gel formation with an additive
English
Gommes, Cédric mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
Blacher, Silvia mailto [Université de Liège - ULg > Département des sciences cliniques > Labo de biologie des tumeurs et du développement >]
Goderis, Bart [Katholieke Universiteit Leuven - KUL > > > > > >]
Pirard, René [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
Heinrichs, Benoît mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
Alié, Christelle mailto [Université de Liège - ULg > > Chimie générale et chimie physique >]
Pirard, Jean-Paul mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
1-Jul-2004
Journal of Physical Chemistry B
Amer Chemical Soc
108
26
8983-8991
Yes (verified by ORBi)
International
1520-6106
Washington
[en] Time-resolved small-angle X-ray scattering (SAXS) measurements performed during the formation of tetraethyl orthosilicate (TEOS) based silica gels in alcohol with 3-(2-aminoethylamino)propyltrimethoxysilane (EDAS) as an additive are reported. The measurements reveal no discontinuity of the nanostructure at the gel point. A chemically induced spinodal phase separation is found to give a coherent picture of the collected data. Increasing the amount of EDAS induces the phase separation on a smaller length scale, which finally leads to a modified gel morphology. The SAXS measurements and the electron micrographs associated with the dry gels could be interpreted in terms of the suggested wet gel formation mechanism.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/688

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Gommes2004 JPhysChemB SAXS.pdfNo commentaryPublisher postprint368.34 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.