Issue 1, 2003
From the journal:

New Journal of Chemistry

Microporosity and connections between pores in SBA-15 mesostructured silicas as a function of the temperature of synthesis

Anne Galarneau,a   Hélène Cambon,a   Francesco Di Renzo,a   Ryong Ryoo,b   Minkee Choib  and  François Fajulaa  

a Laboratoire de Matériaux Catalytiques et Catalyse en Chimie Organique, UMR 5618 ENSCM/CNRS, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, Montpellier cedex 5, France
E-mail: galarne@cit.enscm.fr.

b National Creative Research Initiative Center fir Functional Materials, Department of Chemistry (School of Molecular Science-BK21), Korea Advanced Institute of Science and Technology, Daejeon, Korea
E-mail: rryoo@mail.kaist.ac.kr.

Abstract

Imaging of the platinum replica of the porous structure and low-pressure argon adsorption allowed us to elucidate the complicated porous structure of SBA-15. These techniques enabled us to draw a coherent picture of the evolution of the SBA-15 precursor mesophase as a function of the synthesis temperature. TEM of the platinum replicas has been unable to show bridges between the structural mesopores of SBA-15 synthesized at low temperature, whereas mesoporous bridges are clearly observed for samples formed at higher temperature. Argon adsorption has evidenced the ultramicroporosity of the materials formed at low temperature, as well as its evolution to secondary porosity with diameters greater than 1.5 nm under more severe hydrothermal treatment.

Graphical abstract: Microporosity and connections between pores in SBA-15 mesostructured silicas as a function of the temperature of synthesis

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Article information

DOI
https://doi.org/10.1039/B207378C
Article type
Paper
Submitted
26 Jul 2002
Accepted
27 Sep 2002
First published
28 Nov 2002

New J. Chem., 2003,27, 73-79

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Microporosity and connections between pores in SBA-15 mesostructured silicas as a function of the temperature of synthesis

A. Galarneau, H. Cambon, F. Di Renzo, R. Ryoo, M. Choi and F. Fajula, New J. Chem., 2003, 27, 73 DOI: 10.1039/B207378C

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