SOL-GEL DERIVED SILICA MEMBRANES WITH TAILORED MICROPOROUS STRUCTURES

被引：31

作者：

AYRAL, A ^{[1
]}

BALZER, C ^{[1
]}

DABADIE, T ^{[1
]}

GUIZARD, C ^{[1
]}

JULBE, A ^{[1
]}

机构：

[1] ECOLE NATL SUPER CHIM MONTPELLIER,MAT & PROCEDES MEMBRANAIRES LAB,CNRS,UMR 9987,F-34053 MONTPELLIER 1,FRANCE

来源：

CATALYSIS TODAY | 1995年 / 25卷 / 3-4期

关键词：

D O I：

10.1016/0920-5861(95)00081-P

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The template effect of amphiphilic systems on the porous structure of silica gel layers has been studied. Membranes with a tailor-made microporosity and pore diameters of between 1 and 2 nm were obtained from these gels. Two different preparation methods have been used and their influence on the sol-to-gel transition of silicon alkoxide sols has been investigated. The first method entails the incorporation of non-ionic surfactants which modify the porous structure of gels. Ln this case, specific surface area, pore size and porous volume can be varied in the final material as a function of chain length and concentration of the surfactant. In the second method, self-assembled systems made of cationic surfactants develop during the gelation process and lead to an ordered gel structure. After elimination of the organic mesophase by heating, the membrane material exhibits an ordered microporosity with pore size directly related to the size of the surfactant molecules.

引用

页码：219 / 224

页数：6

共 14 条

[1] [Anonymous], 1990, DRYING SOL GEL SCI, DOI [10.1016/B978-0-08-057103-4.50013-1, DOI 10.1016/B978-0-08-057103-4.50013-1]
[2] Bhave R.R., 1991, INORGANIC MEMBRANES
[3] DABADIE T, 1994, MATER RES SOC SYMP P, V346, P849, DOI 10.1557/PROC-346-849
[4] SYNTHESIS OF INORGANIC GELS IN A LYOTROPIC LIQUID-CRYSTAL MEDIUM .1. SYNTHESIS OF SILICA-GELS IN LAMELLAR PHASES OBTAINED FROM NONIONIC SURFACTANTS
DABADIE, T
AYRAL, A
GUIZARD, C
COT, L
LURIN, C
NIE, W
RIOULT, D
[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1995, 4 (02) : 107 - 116
[5] de Lange R.S.A., 1993, THESIS U TWENTE ENSC
[6] DELANGE RSA, 1992, MATER RES SOC SYMP P, V271, P505, DOI 10.1557/PROC-271-505
[7] SOL-TO-GEL TRANSITION IN REVERSED MICELLES MICROEMULSIONS .2. FUNDAMENTALS
GUIZARD, C
LARBOT, A
COT, L
PEREZ, S
ROUVIERE, J
[J]. JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1990, 87 (11-12) : 1901 - 1922
[8] GUIZARD C, 1994, IN PRESS 8TH P CIMTE
[9] THE SOL-GEL APPROACH TO PREPARE CANDIDATE MICROPOROUS INORGANIC MEMBRANES FOR MEMBRANE REACTORS
JULBE, A
GUIZARD, C
LARBOT, A
COT, L
GIROIRFENDLER, A
[J]. JOURNAL OF MEMBRANE SCIENCE, 1993, 77 (2-3) : 137 - 153
[10] EFFECT OF NONIONIC SURFACE-ACTIVE AGENTS ON TEOS-DERIVED SOLS, GELS AND MATERIALS
JULBE, A
BALZER, C
BARTHEZ, JM
GUIZARD, C
LARBOT, A
COT, L
[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1995, 4 (02) : 89 - 97

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