Correlation between anions of ionic liquids and reduction of silver ions in facilitated olefin transport membranes

Sang Wook Kang, Jinkee Hong, Kookheon Char, Jong Hak Kim, Jungahn Kim, Yong Soo Kang

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16 Citations (Scopus)


The correlation between the anions of the ionic liquids of BMIM+BF4-, BMIM+CF3SO3- and BMIM+NO3- in poly(2-ethyl-2-oxazoline)/AgNO3 membranes and reduction of silver ions has been investigated. The anion type negligibly affected the initial separation performances, however it significantly affected the long-term operation stability. Additionally, UV and TEM confirmed the long-term operational stability was strongly associated with the reduction rate of the silver ions. The reduction rate of the silver ions in the polymer/silver salt/ionic liquid complex was observed in following order: BMIM+BF4- > BMIM+CF3SO3- > BMIM+NO3-, suggesting that among the ionic liquids investigated, BMIM+NO3- had the most improved separation performance.

Original languageEnglish
Pages (from-to)327-332
Number of pages6
Issue number1-3
Publication statusPublished - 2008 Dec 15


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering

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