Kinetic study of MCM-41 synthesis

被引：39

作者：

Blin, JL ^{[1
]}

Otjacques, C ^{[1
]}

Herrier, G ^{[1
]}

Su, BL ^{[1
]}

机构：

[1] Univ Namur, ISIS, Lab Chim Mat Inorgan, B-5000 Namur, Belgium

来源：

INTERNATIONAL JOURNAL OF INORGANIC MATERIALS | 2001年 / 3卷 / 01期

关键词：

MCM-41; synthesis mechanism; mesoporous materials; wall thickness; effect of heating time and temperature;

D O I：

10.1016/S1466-6049(00)00043-X

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A kinetic study of MCM-41-type materials formation has been made to optimize the synthesis conditions in particular the synthesis time and temperature. The changes in morphology and textural properties of materials as a function of hydrothermal synthesis time at four different temperatures have been followed. From the characterization results, the synthesis mechanism is postulated. The present work shows clearly that the thickness of the wall separating two adjacent pores increases with hydrothermal synthesis time and temperature while pore size remains constant. The increase in the wall thickness, indicating the enhancement of polycondensation of silica around the micelles of surfactant, should be very important for strengthening the thermal stability of MCM-41 materials. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：75 / 86

页数：12

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