ZSM-5-TYPE MATERIALS - FACTORS AFFECTING CRYSTAL SYMMETRY

被引：300

作者：

WU, EL ^{[1
]}

LAWTON, SL ^{[1
]}

OLSON, DH ^{[1
]}

ROHRMAN, AC ^{[1
]}

KOKOTAILO, GT ^{[1
]}

机构：

[1] MOBIL RES & DEV CORP,PRINCETON,NJ 08540

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1979年 / 83卷 / 21期

关键词：

D O I：

10.1021/j100484a019

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：

Powder X-ray diffraction patterns of as-synthesized ZSM-5-type materials are consistent with idealized orthorhombic symmetry. A change to apparent monoclinic symmetry is observed upon certain treatments, such as calcination and ion exchange. Numerous pieces of evidence, including simulated powder patterns, show that this is a reversible, displacive transformation between the two symmetry forms causing no change in framework topology. Factors affecting the symmetry change are described. © 1979 American Chemical Society.

引用

页码：2777 / 2781

页数：5

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