Alkylammonium polycations as structure-directing agents in MFI zeolite synthesis

被引：65

作者：

Beck, LW ^{[1
]}

Davis, ME ^{[1
]}

机构：

[1] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 1998年 / 22卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

diquat; triquat; molecular sieve; ZSM-5;

D O I：

10.1016/S1387-1811(98)00096-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Silicate and aluminosilicate MFI-type zeolites are synthesized with di- and triquaternary ammonium cations as structure-directing agents (SDA). Solid-state NMR spectra show that polycations are intact in the as-synthesized zeolites. Materials synthesized with polycationic molecules are compared to zeolites synthesized with tetrapropylammonium, the normal SDA for MFI-type zeolite. The zeolite nucleation rates and particle sizes decrease as the net charge of the organic cation increases, i.e. SDA(n+) where n=1, 2 or 3. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：107 / 114

页数：8

共 15 条

[1] MECHANISM OF STRUCTURE DIRECTION IN THE SYNTHESIS OF SI-ZSM-5 - AN INVESTIGATION BY INTERMOLECULAR H-1-SI-29 CP MAS NMR [J].