An Investigation of the Behavior of Completely Siliceous Zeolite ZSM-5 under High External Pressures

被引：23

作者：

Fu, Yueqiao ^{[1
]}

Song, Yang ^{[1
]}

Huang, Yining ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Chem, London, ON, Canada

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 03期

关键词：

INDUCED REVERSIBLE AMORPHIZATION; STRUCTURAL DEFORMATION; RAMAN-SPECTROSCOPY; ELASTIC BEHAVIOR; INDUCED INCREASE; LTA ZEOLITES; COMPRESSION; TRANSFORMATIONS; POLYMORPHISM; SIO2;

D O I：

10.1021/jp205107u

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 behavior of completely siliceous zeolite ZSM-5 (Si-ZSM-5) under high pressures up to 16 GPa were investigated by in situ Raman spectroscopy and X-ray diffraction with synchrotron radiation in a diamond anvil cell. Pressure-induced amorphization was observed in both as-made and calcined Si-ZSM-5, which transform to a low-density amorphous silica first and then to a high-density amorphous silica. However, transition pressures and reversibility were different for as-made and calcined Si-ZSM-5. It was found that the existence of the template molecules occluded in the zeolite framework is mainly responsible for these differences.

引用

页码：2080 / 2089

页数：10

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