4.7 Article

Xenon adsorption in synthetic chabazite zeolites

期刊

MICROPOROUS AND MESOPOROUS MATERIALS
卷 129, 期 1-2, 页码 68-73

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2009.08.034

关键词

Xenon adsorption; Chabazite; Enthalpy of adsorption; Confinement effects

资金

  1. Decommissioning and Remediation Centre at North Highland College, Thurso

向作者/读者索取更多资源

Xenon adsorption has been studied in different ion-exchanged forms of synthetic chabazite zeolites, K-, Ca-, Li-, Rb- and Cs-CHA, at low pressures and variable temperature. The xenon adsorption capacities vary with the nature of the exchanged cation in a way that is consistent with the known cation locations in the zeolite. Highest uptake was found for Ca-CHA, and lowest for Cs-CHA. The xenon uptakes at room temperature were also consistent with differences in the nitrogen adsorption capacities at 77 K. Enthalpies of adsorption were estimated from the temperature dependence of the adsorption isotherms in Ca-CHA and K-CHA, and found to be very similar. The xenon adsorption was also compared with that of an aluminophosphate (ALPO-CHA) as well as a silicoaluminophosphate (SAPO-34), both having the chabazite-type structure. The high affinity of CHA for xenon is attributed in part to a close match between the size of the xenon atom and the pore dimensions of the CHA structure, the so-called confinement effect. (C) 2009 Elsevier Inc. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据