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Preparation and Application of Anion-Exchange Membrane having Low Water-Splitting Capability  

Moon-Sung Kang (Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology (K-JIST))
Yong-Jin Choi (Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology (K-JIST))
Seung-Hyeon Moon (Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology (K-JIST))
Publication Information
Membrane Journal / v.13, no.1, 2003 , pp. 54-63 More about this Journal
Abstract
The Preparation and electrochemical characterization of anion-exchange membranes containing pyridinium groups were performed. As a result, the pyridinium membranes showed good electrochemical properties, comparable to those of the commercial membranes, with electrical resistance of less than $3.0 {\Xi}cm^2$ in a 0.5 mol $dm^{-3}$ NaCl and high ionic permselectivity (the transport number of $Cl^-$ ions being 0.97). Moreover, water splitting in the membranes containing pyridinium group was about two or three order of magnitude lower than those in the commercial membranes (ｅ.ｇ. AM-1, Tokuyama Crop., Japan) at the same current density because the resonance effedt in the quaternary aromatic pyridinium group contributed to their molecular stability. In addition, the electrodialytic properties of the pyridinium membranes were evaluated in a semi-pilot scale.
Keywords
anion-exchange membranes; pyridinium groups; water splitting; semi-pilot scale;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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