Reference : Structural evolution of lamellar surfactant-silica hybrids upon calcination
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/21023
Structural evolution of lamellar surfactant-silica hybrids upon calcination
English
Henrist, Catherine mailto [Université de Liège - ULg > > Chimie inorganique structurale >]
Cano, I. G. [> > > >]
Rodriguez, M. A. [> > > >]
de Aza, A. H. [> > > >]
Cloots, Rudi [Université de Liège - ULg > > Chimie inorganique structurale >]
Rulmont, André [Université de Liège - ULg > > Chimie inorganique structurale >]
Vogels, C. [> > > >]
Jun-2003
Composites Science and Technology
Elsevier Sci Ltd
63
8
1127-1131
Yes (verified by ORBi)
International
0266-3538
Oxford
[en] layered structures ; nanostructures ; heat treatment ; XRD
[en] A lamellar mesostructured silica was subjected to a progressive heat treatment in order to study its structural evolution and the characteristics of the resulting calcined powder. By combining informations from several physical methods, i.e. TG-DTA, XRD, TEM and nitrogen adsorption, it has been possible to evidence the formation of very small particles of silica at a temperature around 450 degreesC, exhibiting a very high value of aspect ratio, consequently to the template loss by combustion. By increasing the temperature above 530 degreesC, the dehydroxylation promotes a decrease in the surface area, followed by the sintering process at higher temperature, which nearly annihilate the surface area of the particles. (C) 2003 Elsevier Science Ltd. All rights reserved.
http://hdl.handle.net/2268/21023

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