Syntheses of high quality KIT-6 and SBA-15 mesoporous silicas using low-cost water glass, through rapid quenching of silicate structure in acidic solution

被引：68

作者：

Jo, Changbum ^{[1
]}

Kim, Kyoungsoo ^{[1
]}

Ryoo, Ryong ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol WCU, Dept Chem, Ctr Funct Nanomat, Taejon 305701, South Korea

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2009年 / 124卷 / 1-3期

关键词：

Mesoporous silica; SBA-15; KIT-6; Synthesis; SODIUM-SILICATE; FACILE SYNTHESIS; PORE STRUCTURE; COPOLYMER; TRIBLOCK; MICROPOROSITY; TEMPERATURE; MCM-48;

D O I：

10.1016/j.micromeso.2009.04.037

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

KIT-6 and SBA-15 ordered mesoporous silicas were obtained under various synthesis conditions using water glass as a low-cost silica source. The products were characterized with X-ray powder diffraction, N-2 adsorption, transmission electron microscopy, and scanning electron microscopy. The result showed that the initial mixing condition was a decisive factor for the structural order and mesoporosity. High-quality KIT-6 and SBA-15, even better than products from tetraethoxysilane, were obtained when the reactants were mixed very rapidly to cause instant quenching of silicate structures in acidic solution containing non-ionic surfactants. This procedure was highly reproducible and suitable for a large-scale synthesis. (C) 2009 Elsevier Inc. All rights reserved.

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页码：45 / 51

页数：7

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