The mechanism of channel formation in the mesoporous molecular sieve MCM-41

被引：42

作者：

Zhou, WZ

Klinowski, J

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

[2] Univ Cambridge, Irc Superconduct, Cambridge CB2 1EW, England

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 292卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(98)00606-X

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：

We propose a model of channel growth in mesoporous molecular sieves based on new evidence from high-resolution transmission electron microscopy and X-ray diffraction. The silicate enters a silicate/surfactant aggregate through the surface perpendicular to its axis, but the surfactant enters along the axis. The pore-pore distance is initially larger near the surface of the particle. As the synthesis proceeds, silicate penetrates towards the centre of the particle and the pore-pore distance becomes uniform. At high temperatures and long reaction times, the maximum diameter of the surfactant rods depends only on the size of the template molecule. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：207 / 212

页数：6

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