Improvement of hydrothermal stability of mesoporous silica using salts: reinvestigation for time-dependent effects

被引：164

作者：

Kim, JM

Jun, S

Ryoo, R ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem, Mat Chem Lab, Taejon 305701, South Korea

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 30期

关键词：

D O I：

10.1021/jp990394k

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：

Recently, we reported on the improvement of hydrothermal stability of mesoporous silica using salts solutions (Ryoo, R.; Jun, S. J. Phys. Chem. B 1997, 201, 317. Ryoo et al. J. Phys. Chem. 1996, 100, 17718). The salt effect has been reinvestigated here to solve problems of poor reproducibility. It turned out that the time-dependent effect was missing in the previous reports. The salt effect required approximately 10 days of treatment at 373 K to give its full effect. The time dependence was a critical factor for the improvement of the hydrothermal stability.

引用

页码：6200 / 6205

页数：6

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