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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received August 30, 2012
Accepted February 12, 2013
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Separative capability of γ-Al2O3 porous ceramic membrane modified by ZIF-8

Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong, Sichuan 637009, P. R. China
Korean Journal of Chemical Engineering, May 2013, 30(5), 1119-1124(6), 10.1007/s11814-013-0026-7
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Abstract

Several precursors such as zinc nitrite, zinc chloride, zinc acetate and zinc sulfate were used to synthesize ZIF-8. These zeolitic imidazolate frameworks synthesized from different zinc precursors under different reaction conditions were characterized by XRD, SEM and FTIR. The synthesis of ZIF-8 was not sensitive to zinc precursor and reaction parameter. Subsequently, we used ZIF-8 to modify the γ-Al2O3 porous ceramic membrane, expecting improvement of separation performance in the γ-Al2O3 porous ceramic membrane. The experimental results indicated that the permselectivity of hydrogen/nitrogen was enhanced in the γ-Al2O3 porous ceramic membrane modified with ZIF-8, although the gas permeance through the modified membrane slightly decreased. In addition, the modified γ-Al2O3 porous ceramic membrane was used to separate the binary systems containing ethanol-water and acrylic acid-water. The separation factor of ethanol to water is 3.1, while it is 2.6 as for acrylic acid-water. Furthermore, the permeance in the former is about five times than that of the latter.

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