Studies on thermal and hydrothermal stability for high-siliceous molecular sieve MCM-41

被引：0

作者：

Dong, WY ^{[1
]}

Long, YC ^{[1
]}

Gao, XQ ^{[1
]}

Xu, TM ^{[1
]}

Xie, GG ^{[1
]}

Gao, Z ^{[1
]}

机构：

[1] FUDAN UNIV,DEPT CHEM,SHANGHAI 200433,PEOPLES R CHINA

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 1996年 / 17卷 / 12期

关键词：

high-siliceous molecular sieve MCM-41; thermal stability; hydrothermal stability; adsorption isotherm of cyclohexane;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-siliceous MCM-41 was calcined at 800 degrees C in dry air and at 600 degrees C in water-saturated air for different time respectively. Their XRD patterns and adsorption isotherms of cyclohexane were determined. The results show that the structure of MCM-41 is more stable after calcining at high temperature in dry air. The structures of the samples were damaged by the hydrothermal treatment precalcined at high temperature in dry air for different time with different degrees. The parent MCM-41 was damaged more, but the precalcined samples less. The influence of thermal and hydrothermal treatment on the pore size is not too remarkable.

引用

页码：1840 / 1842

页数：3

共 6 条

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