A study on H2S permeability of CsHSO4 membranes

被引：0
|
作者：
Mbah, Jonathan [1 ,2 ]
Krakow, Burton [2 ]
Stefanakos, Elias [2 ,3 ]
Wolan, John T. [1 ,2 ]
机构：
[1] Univ S Florida, Coll Engn, Dept Chem & Biomed Engn, Tampa, FL 33620 USA
[2] Univ S Florida, Coll Engn, Clean Energy Res Ctr, Tampa, FL 33617 USA
[3] Univ S Florida, Coll Engn, Dept Elect Engn, Tampa, FL 33617 USA
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 05期
关键词：
H2S gas; CsHSO4; membrane; Permeability; Solid electrolyte; FUEL-CELL; CONDUCTOR CSHSO4; DIFFUSION; PHASE; CARBON;
D O I：
10.1016/j.ijhydene.2008.12.069
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：
The gas permeability of H2S gas at 150 degrees C through ultra-thin cesium hydrogen sulfate (CsHSO4) membranes has been investigated. Gas chromatography-mass spectrometry analyses indicate that CsHSO4 membrane is impermeable to H2S gas under test conditions. The apparent micropore diameter of the membrane averaged between 9.5 and 11.5 angstrom with a maximum permeance of 0.09 Barrer (6.75 x 10(-19) m(2) s(-1) Pa-1). Atomic force microscope and X-ray diffraction analyses show respectively that the surface morphology and crystal structure of the membranes are preserved, with no adverse effect from prolonged exposure to H2S gas. Electrochemical impedance spectroscopy analysis confirm over a 30% decrease in membrane resistance via an 80% reduction in membrane thickness. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2460 / 2466
页数：7
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