Synthesis of highly ordered MCM-41 silica with spherical particles

被引：46
|
作者：
Zukal, Arnost [1 ]
Thommes, Matthias [1 ]
Cejka, Jiri [1 ]
机构：
[1] Quantachrome Inst, Boynton Beach, FL 33426 USA
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2007年 / 104卷 / 1-3期
关键词：
silica; spherical particles; homogenous precipitation; nitrogen adsorption; argon adsorption;
D O I：
10.1016/j.micromeso.2007.01.004
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Highly ordered MCM-41 silica was synthesized by using of optimized blend of cetyltrimethylammonium bromide and 1-methyl-3-octylimidazolium chloride as a structure-directing agent. The employment of homogeneous precipitation of the solid product from a water solution of sodium metasilicate and the surfactant blend resulted in the formation of very well ordered spherical particles. The material was characterized by scanning as well transmission electron microscopy, X-ray powder diffraction, and nitrogen and argon adsorption using a proper non-local density functional theory approach for calculations of the textural parameters. The results obtained show that spherical particles are composed of domains of perfectly ordered hexagonal porous structure. (c) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码：52 / 58
页数：7
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