SMALL-ANGLE NEUTRON-SCATTERING STUDIES OF THE TEMPLATE-MEDIATED CRYSTALLIZATION OF ZSM-5-TYPE ZEOLITE

被引：68

作者：

ITON, LE

TROUW, F

BRUN, TO

EPPERSON, JE

WHITE, JW

HENDERSON, SJ

机构：

[1] ARGONNE NATL LAB,DIV PULSED NEUTRON SOURCE,ARGONNE,IL 60439

[2] AUSTRALIAN NATL UNIV,RES SCH CHEM,CANBERRA,ACT 2600,AUSTRALIA

来源：

LANGMUIR | 1992年 / 8卷 / 04期

关键词：

D O I：

10.1021/la00040a005

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Small-angle neutron scattering is a useful new approach to the study of zeolite crystallization from aluminosilicate gels and the action of template molecules. It has been applied to gels for synthesis of zeolite ZSM-5 using tetrapropylammonium ions as templates where the scattering length densities of the gel particles and their texture were determined by using contrast variation methods. Gels formulated from soluble silicate incorporate template molecules promptly into an amorphous "embryonic" structure, and crystallization ensues via a solid hydrogel transformation mechanism. Gels formulated from colloidal silica show different scattering behavior, and a liquid-phase transport mechanism is inferred.

引用

页码：1045 / 1048

页数：4

共 8 条

[1] CRYSTALLIZATION OF ZEOLITE-A - A SPECTROSCOPIC STUDY [J].