Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
632492 | Journal of Membrane Science | 2016 | 8 Pages |
Abstract
Imidazolium-based ionic liquids and imidazolium-based organic-inorganic hybrid alkaline anion exchange membranes (AEMs) are synthesized and investigated in the present work. The imidazolium-based hybrid AEMs are prepared via in situ cross-linking of styrene, acrylonitrile, 1-vinyl-propyl-triethoxysilaneimidazolium chloride ([VPSIm][Cl]) and 1-vinyl-3-butylimidazolium bromide ([VBIm][Br]), followed by anion exchange with hydroxide ions. The water uptake and swelling degree of the hybrid AEMs decrease with increasing [VPSIm][Cl] content due to the formation of an Si-O-Si inorganic network in the membranes. The resulting organic-inorganic hybrid AEMs show good thermal stability, excellent mechanical properties and high conductivity (above 10â2 S cmâ1 at room temperature in liquid water). Compared with samples without the addition of [VPSIm][Cl], the hybrid membranes show much higher alkaline stability, and the hybrid AEMs displayed excellent chemical stability up to 480 h in 2 M KOH solution at 60 °C.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Tianying Feng, Bencai Lin, Shuai Zhang, Ningyi Yuan, Fuqiang Chu, Michael A Hickner, Chenyu Wang, Liang Zhu, Jianning Ding,