MCM-41 - A MODEL SYSTEM FOR ADSORPTION STUDIES ON MESOPOROUS MATERIALS

被引：163

作者：

SCHMIDT, R ^{[1
]}

STOCKER, M ^{[1
]}

HANSEN, E ^{[1
]}

AKPORIAYE, D ^{[1
]}

ELLESTAD, OH ^{[1
]}

机构：

[1] UNIV OSLO,DEPT CHEM,N-0315 OSLO,NORWAY

来源：

MICROPOROUS MATERIALS | 1995年 / 3卷 / 4-5期

关键词：

MCM-41; MESOPOROUS MATERIALS; NITROGEN ADSORPTION; H-1 NUCLEAR MAGNETIC RESONANCE; PORE CONDENSATION;

D O I：

10.1016/0927-6513(94)00055-Z

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Purely siliceous MCM-41 materials with different pore sizes were synthesised. The obtained nitrogen isotherms of these materials varied from a ''type I-like'' isotherm (small pore size) over a reversible type IV isotherm (intermediate pore size) to a typical type IV isotherm, which shows pore condensation with hysteresis. Similar types of transition states and hysteresis curves are observed by H-1 nuclear magnetic resonance (NMR) by monitoring the proton signal intensity of the mobile water molecules confined in the pores versus temperature. The consistency observed between the two methods makes H-1 NMR a valuable additional technique for characterisation of mesoporous materials.

引用

收藏

页码：443 / 448

页数：6

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