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Issue 11, 2007
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MCM-41 silica monoliths with independent control of meso- and macroporosity

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Abstract

Centimetre sized macroporous silica monoliths consisting of MCM-41 have been prepared by a two-step procedure allowing an independent control of the meso- and macro-porosity. In the first step a monolith with a macroporosity tailored between 2 and 20 μm is prepared under acidic medium by a phase separation, named spinodal decomposition, leading to a bicontinuous structure of a silica/polymer phase and a water phase. The monolith is then reacted in an alkaline solution of cetyltrimethyl ammonium to transform the silica skeleton into MCM-41 under conditions which preserve the original morphology and macroporosity of the material. The combination of spinodal decomposition and pseudomorphic transformation proves very efficient to precisely tune the textural characteristics of macroscopic objects.

Graphical abstract: MCM-41 silica monoliths with independent control of meso- and macroporosity

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Article information


Submitted
27 Jul 2007
Accepted
13 Sep 2007
First published
10 Oct 2007

New J. Chem., 2007,31, 1907-1917
Article type
Paper

MCM-41 silica monoliths with independent control of meso- and macroporosity

J. Babin, J. Iapichella, B. Lefèvre, C. Biolley, J. Bellat, F. Fajula and A. Galarneau, New J. Chem., 2007, 31, 1907
DOI: 10.1039/B711544J

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