Thermogravimetric monitoring of the MCM-41 synthesis

被引：57
|
作者：
Araujo, AS [1 ]
Jaroniec, M [1 ]
机构：
[1] Kent State Univ, Dept Chem, Kent, OH 44242 USA
来源：
THERMOCHIMICA ACTA | 2000年 / 363卷 / 1-2期
关键词：
hydrothermal synthesis; MCM-41; pH adjustment; thermogravimetry;
D O I：
10.1016/S0040-6031(00)00637-7
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
MCM-41 materials were synthesized using cetyltetramethylammonium bromide (CTMABr) as the template and two types of silicas: regular silica-gel and colloidal fumed silica. The synthesis was made under hydrothermal conditions at 100 degreesC by adjusting the pH of the hydrogel to 10. A small amount of the sample was taken after each pH adjustment and analyzed by high-resolution thermogravimetry in order to determine the temperature ranges related to water desorption, surfactant decomposition and silanol condensation for the mesostructures studied, as well as to estimate their overall quality. The BET specific surface area and pore size distribution for calcined MCM-41 materials were evaluated from nitrogen adsorption isotherms. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：175 / 180
页数：6
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