ROOM-TEMPERATURE AGING OF A ZSM-5 PREPARATION DETECTED BY SMALL-ANGLE X-RAY AND NEUTRON-SCATTERING AND NMR-SPECTROSCOPY

被引：51

作者：

DOUGHERTY, J

ITON, LE

WHITE, JW

机构：

[1] AUSTRALIAN NATL UNIV, RES SCH CHEM, CANBERRA, ACT 0200, AUSTRALIA

[2] ARGONNE NATL LAB, DIV MAT SCI, ARGONNE, IL 60439 USA

来源：

ZEOLITES | 1995年 / 15卷 / 07期

关键词：

ZSM-5; AGING; ALUMINOSILICATE MICROGEL; SMALL-ANGLE X-RAY SCATTERING; SMALL-ANGLE NEUTRON SCATTERING;

D O I：

10.1016/0144-2449(95)00045-8

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 room temperature aging process in a solution phase ZSM-5 preparation has been studied by scattering and n.m.r. techniques. Small-angle X-ray scattering detected particles growing in the 1-10 nm size domain, and their evolution was followed over a period of 4 days; the most dramatic changes occurred in the first 24 h. A contrast variation small-angle neutron scattering experiment was performed to determine if the particles that formed contained the template, the tetrapropylammonium cation. The nature of the bonds formed during the aging process was investigated by liquid phase Si-29, C-13, and Al-27 n.m.r. experiments.

引用

页码：640 / 649

页数：10

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