Super-Hydrated Zeolites: Pressure-Induced Hydration in Natrolites

被引：37

作者：

Seoung, Donghoon ^{[1
]}

Lee, Yongmoon ^{[1
]}

Kao, Chi-Chang ^{[2
]}

Vogt, Thomas ^{[3
,4
]}

Lee, Yongjae ^{[1
]}

机构：

[1] Yonsei Univ, Dept Earth Syst Sci, Seoul 120749, South Korea

[2] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[3] Univ S Carolina, NanoCtr, Columbia, SC 29208 USA

[4] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2013年 / 19卷 / 33期

关键词：

high-pressure chemistry; ion exchange; natrolites; X-ray diffraction; zeolites; EXCHANGED NATROLITES;

D O I：

10.1002/chem.201300591

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-pressure synchrotron X-ray powder diffraction studies of a series of alkali-metal-exchanged natrolites, A(16)Al(16)Si(24)O(80)nH(2)O (A=Li, K, Na, Rb, and Cs and n=14, 16, 22, 24, 32), in the presence of water, reveal structural changes that far exceed what can be achieved by varying temperature and chemical composition. (16)Al(16)Si(24)O(80)32H(2)O at 1.0GPa, a species that reverts back above 2.5GPa as the potassium ions interchange their locations with those of water and migrate from the hinge to the center of the pores. Super-hydrated zeolites are new materials that offer numerous opportunities to expand and modify known chemical and physical properties by reversibly changing the composition and structure using pressure in the presence of water.

引用

页码：10876 / 10883

页数：8

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