Formation of high flux CHA-type zeolite membranes and their application to the dehydration of alcohol solutions

被引：74

作者：

Hasegawa, Y. ^{[1
]}

Abe, C. ^{[1
]}

Nishioka, M. ^{[1
]}

Sato, K. ^{[1
]}

Nagase, T. ^{[1
]}

Hanaoka, T. ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Compact Chem Syst, Miyagino Ku, Sendai, Miyagi 9838551, Japan

来源：

JOURNAL OF MEMBRANE SCIENCE | 2010年 / 364卷 / 1-2期

关键词：

Zeolite membrane; Chabazite; Dehydration; Ethanol; Support tube; PERMEATION PROPERTIES; POROUS SUPPORT; PERVAPORATION; PERFORMANCE;

D O I：

10.1016/j.memsci.2010.08.022

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

CHA-type zeolite membranes have excellent dehydration performance and acid stability. However, the permeation flux of the membrane is still lower than that of commercially available NaA-type zeolite membranes. In this paper, the influences of the crystal growth conditions and the support properties on the dehydration performance were determined in order to prepare high flux CHA-type zeolite membranes. As a result, the permeation flux increased to 14.0 kg m(-2) h(-1) for a 90 wt% ethanol solution at 348K (separation factor> 10,000). The membrane was also used to dehydrate methanol and 2-propanol. The results suggest that the CHA-type zeolite membranes are effective for the separation of water from organic solvents. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：318 / 324

页数：7

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