Adsorption and thermogravimetric methods for monitoring surface and structural changes in ordered mesoporous silicas induced by their chemical modification

被引：11

作者：

Jaroniec, M

Jaroniec, CP

Kruk, M

Ryoo, R

机构：

[1] Kent State Univ, Dept Chem, Kent, OH 44242 USA

[2] Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea

[3] Korea Adv Inst Sci & Technol, Ctr Mol Sci, Taejon 305701, South Korea

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 1999年 / 5卷 / 04期

关键词：

MCM-41; bonding of organosilanes; surface analysis; adsorption energy distribution; pore structure analysis;

D O I：

10.1023/A:1008992228421

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 current work demonstrates that the standard adsorption analysis has a limited applicability for characterization of chemically modified porous silicas. Since low-pressure nitrogen adsorption isotherms are sensitive to the surface changes caused by chemical modification of silicas, these isotherms were successfully used to evaluate their surface heterogeneity during different stages of modification. The surface analysis was accomplished by using adsorption energy distributions and high-resolution comparative plots.

引用

页码：313 / 317

页数：5

共 10 条

[1] Adsorption and thermogravimetric studies of silica-based amide bonded phases [J].