Effects of pH on the Structure of Non-Ionically Templated MSU-X Mesoporous Silica via a Two-Step Synthesis

被引：0

作者：

Jin Zheng-Wei ^{[1
]}

Liu Chang-Ling ^{[2
]}

Liang Hao ^{[3
]}

机构：

[1] Tianjin Univ Sci & Technol, Sch Packaging & Printing Engn, Tianjin 300222, Peoples R China

[2] Jilin Inst Chem Technol, Coll Chem & Mat Engn, Jilin 132022, Jilin Province, Peoples R China

[3] Beijing Univ Chem Technol, Dept Pharmaceut Engn, Beijing 100029, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2009年 / 25卷 / 01期

关键词：

Two-step synthesis; MSU-X; Mesoporous silica; Tween; 20; NONIONIC SURFACTANT PATHWAY; MOLECULAR-SIEVES; MESOSTRUCTURE TRANSFORMATION; COPOLYMER; TRIBLOCK; MECHANISM; SIZES;

D O I：

10.3866/PKU.WHXB20090127

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Highly ordered MSU-X type mesoporous silica was synthesized by using ethoxylated derivatives of fatty esters of sorbitan (Tween 20) as template via a two-step pathway under mildly acidic conditions (pH=3.32-4.26) without the addition of fluoride. The template concentration (ca 2% (w)) is much lower than for conventional synthetic routes and the synthetic medium is much simpler than that used for other two-step pathways. The obtained materials have high specific surface areas. large pore volumes, and thick pore walls. Transformations of exterior morphologies and inner structure of mesoporous silica were found by varying the pH and keeping all other conditions constant.

引用

页码：150 / 154

页数：5

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