STUDIES ON THE MECHANISM OF ZSM-5 FORMATION

被引：117

作者：

CHANG, CD

BELL, AT

机构：

[1] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720

[2] UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720

来源：

CATALYSIS LETTERS | 1991年 / 8卷 / 5-6期

关键词：

NUCLEATION OF ZEOLITE PRECURSOR; ZSM-5 NUCLEATION BY SI-29 NMR;

D O I：

10.1007/BF00764192

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 nucleation of (Al-free) zeolite precursor gels was studied using X-ray diffraction, Si-29 FT-NMR, and ion exchange. Results suggest that in ZSM-5 nucleation, the channel intersections are first formed. These clathrate-like units, each containing essentially one TPA+ cation, are initially randomly connected, but progressively "anneal" with rearrangement under the influence of OH- ions to form the ZSM-5 framework.

引用

页码：305 / 316

页数：12

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