Ionic Liquid as a solvent and Long-Term Separation Performance in Polymer/Silver Salt Complex Membrane

  • Kang, Sang-Wook (School of Chemical & Biological Engineering, Seoul National University) ;
  • Kim, Jong-Hak (Department of Chemical Engineering, Yonsei University) ;
  • Char, Kook-Heon (School of Chemical & Biological Engineering, Seoul National University) ;
  • Kang, Yong-Soo (Departmentl of Chemical Engineering, Hanyang University)
  • Published : 2006.10.13

Abstract

The reduction behavior of silver ions to silver nanoparticles is an important research topic in polymer/silver salt complex membranes for facilitated olefin transport, because it has a significant effect on the long-term stability of membrane performance. In this study, the effects of solvent on the formation of silver nanoparticles and long-term membrane performance in polymer/silver salt complex membrane were investigated. This effect was assessed for the complexes of poly(N-vinyl pyrrolidone) $(PVP)/AgBF_{4}$ with the use of ionic liquid (IL), acetonitrile (ACN) and water as a solvent. Membrane performance test shows that long-term stability is strongly dependent on the kind of solvent and arranged: IL > ACN >> water.

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