Reference : Pore structure evolution of highly ordered mesoporous silica CMI-1 during boiling wat...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/137359
Pore structure evolution of highly ordered mesoporous silica CMI-1 during boiling water treatment: A multi-technique investigation
English
Léonard, Alexandre mailto [Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Chimie > Laboratoire de Chimie des Matériaux Inorganiques > >]
Blin, J. L. [Université Nancy > Equipe Phys.-Chim. des Colloides, UMR 7565 CNRS > > >]
Su, B. L. [Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Chimie > Laboratoire de Chimie des Matériaux Inorganiques > >]
2004
Colloids and Surfaces A: Physicochemical and Engineering Aspects
241
1-3
87-93
Yes (verified by ORBi)
International
0927-7757
[en] Boiling water resistance ; C16(EO)10 ; CMI-1 ; Hydrolysis ; Mesoporous silica ; Non-ionic surfactants
[en] The structural, textural and morphological evolution of calcined surfactant-free mesoporous molecular sieves treated in boiling water was investigated and explained by a three-step mechanism. The materials, prepared by a non-ionic surfactant [C16(EO)10] templating pathway, undergo a sharp decrease in surface area and pore size at the initial stage due to the partial hydrolysis of the silica walls. Then, the dissolution of the resulting branched (Si-O-)n chains attached to the internal surface of the pores results in a gain of surface area and pore size. Finally, the loss in surface area and the sharp increase in pore sizes is due to the destruction of the pore walls and thus of the materials. © 2004 Elsevier B.V. All rights reserved.
http://hdl.handle.net/2268/137359
10.1016/j.colsurfa.2004.04.031

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