Characterization and catalytic performance of mesoporous molecular sieves Al-MCM-41 materials

被引：75

作者：

Chen, XY ^{[1
]}

Huang, LM ^{[1
]}

Ding, GZ ^{[1
]}

Li, QZ ^{[1
]}

机构：

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

来源：

CATALYSIS LETTERS | 1997年 / 44卷 / 1-2期

关键词：

Al-MCM-41; characterization; catalytic performance;

D O I：

10.1023/A:1018968823654

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：

Mesoporous Al-MCM-41 materials of different Si/Al ratios have been synthesized and characterized by X-ray powder diffraction, Al-27 and Si-29 MAS NMR, differential thermogravimetric analysis, N-2 adsorption measurements, FT-IR and catalytic cracking of alkanes. The experimental results show that the incorporation of aluminium into the framework of MCM-41 has a great effect on the degree of long-distance order, the surface acidities and the mesoporous structures of the materials. With increase of the aluminium content, the amounts of tetrahedral framework aluminium and the acid sites on the samples increase, but the acid strength decreases. Al-MCM-41 materials exhibit high activity for n-C-16(0), cracking and good selectivity for producing low carbonalkylenes, particularly for i-C-4(=).

引用

页码：123 / 128

页数：6