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Article Dans Une Revue Studies in Surface Science and Catalysis Année : 2003

Cationic templating with organic counterion for superstable mesoporous silica

Résumé

Superstable mesoporous silicas LUS-1 templated using cationic surfactants of various chain lengths were synthesized in the presence of tosylate anions in basic media with low surfactant to silicium ratios. The highly structured hexagonal silica mesophases are stable in boiling water for several days and, after calcination up to 1093 K. A stabilizing hydrothermal treatment before calcination further improves the stability up to 1273 K. It is believed that the outstanding stability of the LUS-1 is related to the hydrophobic control obtained using an org. surfactant counterion in the surfactant-silicate interface during polycondensation.

Domaines

Matériaux
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Dates et versions

hal-00475134 , version 1 (01-05-2024)

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P. Reinert, B. Garcia, C. Morin, A. Badiei, Pascal Perriat, et al.. Cationic templating with organic counterion for superstable mesoporous silica. Studies in Surface Science and Catalysis, 2003, Studies in Surface Science and Catalysis, 146, pp.133-136. ⟨10.1016/S0167-2991(03)80345-2⟩. ⟨hal-00475134⟩
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