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
收藏
页码：318 / 324
页数：7
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