Ion-exchanged SAPO-34 membranes for light gas separations

被引：63

作者：

Hong, Mei ^{[1
]}

Li, Shiguang ^{[1
]}

Funke, Hans F. ^{[1
]}

Falconer, John L. ^{[1
]}

Noble, Richard D. ^{[1
]}

机构：

[1] Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2007年 / 106卷 / 1-3期

关键词：

ion exchange; gas separation; zeolite membrane; SAPO-34; gas adsorption;

D O I：

10.1016/j.micromeso.2007.02.037

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ion exchange of H-SAPO-34 zeolite membranes with Li+, Na+, K+, NH+, and Cu2+ cations in non-aqueous solutions increased CO2/CH4 ideal and separation selectivities up to 60%, but increased H-2/CH4 ideal and separation selectivities less than 18%. Ion exchange decreased permeances, and the decrease was larger for large cations, apparently due to steric hindrance. Exchange did not degrade SAPO-34 crystals or membranes, but changed adsorption properties for some ions. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：140 / 146

页数：7

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