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

被引：162

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

页码：443 / 448

页数：6

共 18 条

[1]

ACKPORIAYE DJ, 1994, J PHYS CHEM-US, V98, P1926

[2]

Beck J. S., 1991, U. S. Patent, Patent No. [5,057,296, 5057296]

[3]

Beck J.S., 1992, U.S. Patent, Patent No. [5 108 725, 5108725, 5,108,725]

[4] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].