Permeation of aromatic isomer vapors through oriented MFI-type membranes made by secondary growth

被引：97

作者：

Xomeritakis, G ^{[1
]}

Tsapatsis, M ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Chem Engn, Amherst, MA 01003 USA

来源：

CHEMISTRY OF MATERIALS | 1999年 / 11卷 / 04期

关键词：

D O I：

10.1021/cm9811343

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：

Oriented MFI-type membranes made by secondary (seeded) growth exhibit potential for size-selective separation of p-xylene from its bulkier o- and m-xylene isomers, as judged by substantial single-component (up to 40) or mixture (up to 18) permeation flux ratios at 100 degrees C. However, increased permeation of the bulkier isomers, attributed to the flexibility of the MFI framework and resulting in lower selectivities, is observed under conditions of high temperature or high p-xylene loading in the MFI membranes.

引用

页码：875 / +

页数：5

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