On the microporous nature of mesoporous molecular sieves

被引：133

作者：

Göltner, CG ^{[1
]}

Smarsly, B ^{[1
]}

Berton, B ^{[1
]}

Antonietti, M ^{[1
]}

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

来源：

CHEMISTRY OF MATERIALS | 2001年 / 13卷 / 05期

关键词：

D O I：

10.1021/cm0010755

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：

The combination of small-angle X-ray scattering and qualitative porosimetry is applied to the puzzling phenomenon of overly large specific surface areas in some mesoporous silicas. Geometrical calculations, considering the relationship between structure, lattice parameter, and specific surface area, reveal the latter to be at least 1 order of magnitude smaller than experimental values obtained from sorption experiments, indicating the presence of micropores. Selective investigation of the mesopore system reveals that up to 63% of the specific surface area is due to microporosity. A relationship between the undirected creation of porosity and supramolecular templating is discussed.

引用

页码：1617 / 1624

页数：8

共 37 条

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