MESOPOROUS ALUMINOSILICATES - PREPARATION FROM CA-A ZEOLITE BY TREATMENT WITH AMMONIUM FLUOROSILICATE

被引：9

作者：

LEVANMAO, R

VO, NTC

SJIARIEL, B

LEE, L

DENES, G

机构：

[1] CONCORDIA UNIV,DEPT CHEM & BIOCHEM,SOLID STATE CHEM & MOSSBAUER SPECT LAB,MONTREAL H3G 1M8,QUEBEC,CANADA

[2] CONCORDIA UNIV,DEPT CHEM & BIOCHEM,INORGAN MAT LABS,MONTREAL H3G 1M8,QUEBEC,CANADA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1992年 / 2卷 / 06期

关键词：

MESOPOROUS MATERIAL; ALUMINOSILICATE; ZEOLITE; AMMONIUM HEXAFLUOROSILICATE;

D O I：

10.1039/jm9920200595

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：

Ammonium hexafluorosilicate (AFS) in aqueous solution under mild conditions can modify drastically the textural properties of Ca-A zeolite. Open slit-shaped mesopores with a pore-size distribution showing a maximum at 14-20 nm are formed. The average pore diameter depends on the rate of addition of the AFS solution to the leaching medium. If such a treatment is combined with acid leaching or hydrothermal treatment, the mesoporous materials obtained exhibit similar pore-size distribution. However, their adsorption capacity for nitrogen is significantly increased.

引用

页码：595 / 599

页数：5

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