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

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.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2009-08
Language
ENG
Keywords

SODIUM-SILICATE; SYNTHESIS TEMPERATURE; FACILE SYNTHESIS; PORE STRUCTURE; COPOLYMER; SURFACTANT; TRIBLOCK; SYSTEM; MESOSTRUCTURES; MICROPOROSITY

Citation

MICROPOROUS AND MESOPOROUS MATERIALS, v.124, no.1-3, pp.45 - 51

ISSN
1387-1811
DOI
10.1016/j.micromeso.2009.04.037
URI
http://hdl.handle.net/10203/12567
Appears in Collection
CH-Journal Papers(저널논문)
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