Article (Scientific journals)
Pore structure evolution of highly ordered mesoporous silica CMI-1 during boiling water treatment: A multi-technique investigation
Léonard, Alexandre; Blin, J. L.; Su, B. L.
2004In Colloids and Surfaces A: Physicochemical and Engineering Aspects, 241 (1-3), p. 87-93
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Keywords :
Boiling water resistance; C16(EO)10; CMI-1; Hydrolysis; Mesoporous silica; Non-ionic surfactants
Abstract :
[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.
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Léonard, Alexandre  ;  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
Language :
English
Title :
Pore structure evolution of highly ordered mesoporous silica CMI-1 during boiling water treatment: A multi-technique investigation
Publication date :
2004
Journal title :
Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN :
0927-7757
eISSN :
1873-4359
Publisher :
Elsevier, Netherlands
Volume :
241
Issue :
1-3
Pages :
87-93
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 January 2013

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