Mordenite and ZSM-5 hydrophilic tubular membranes for the separation of gas phase-mixtures

被引：45

作者：

Bernal, MP ^{[1
]}

Piera, E ^{[1
]}

Coronas, J ^{[1
]}

Menéndez, M ^{[1
]}

Santamaría, J ^{[1
]}

机构：

[1] Univ Zaragoza, Chem & Environm Engn Dept, Fac Sci, E-50009 Zaragoza, Spain

来源：

CATALYSIS TODAY | 2000年 / 56卷 / 1-3期

关键词：

zeolite membranes; hydrocarbon permeance; water separation;

D O I：

10.1016/S0920-5861(99)00279-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Water was selectively separated from water/He, water/HC and water/HC/He mixtures (HC being methane, propane or n-butane) using mordenite/ZSM-5/chabazite and ZSM-5 membranes. The membranes were prepared on both alumina and stainless steel tubular porous supports by in situ liquid phase hydrothermal synthesis. Water permeated faster because its preferential adsorption on the pores of the hydrophilic zeolite membranes; furthermore, capillary condensation in microporous defects between zeolite crystals is also possible under the experimental conditions used. The influence of the nature of the hydrocarbon in the mixtures and of the operating conditions (temperature and feed composition) on the separation performance of the zeolite membranes was analyzed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：221 / 227

页数：7

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