Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Effect of Valine on facilitated O1e1in Transport Membranes

올레핀 촉진수송 분리막의 성능향상을 위한 Valine의 효과

  • Yong Soo Kang (Center for Facilitated Transport Membranes, KIST) ;
  • Sang Wook Kang (Center for Facilitated Transport Membranes, KIST) ;
  • Jong Hak Kim (Center for Facilitated Transport Membranes, KIST) ;
  • Jongok Won (Department of Applied Chemistry, Sejong University) ;
  • Kookheon Char (Chemical Processes, Seoul National University)
  • Published : 2003.06.01
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Abstract

A remarkable separation performance of olefin/paraffin mixtures has been observed through facilitated olefin transport membranes consisting of silver ions dissolved in polymer matrices. In this research, valine, an amino acid, was introduced in poly (2-ethyl-2-oxazoline) (POZ)/$AgBF_4$ membranes to increase the separation performance. FT-IR spectra show that the cationic sites ($-NH_3^+$) of valine interact with the counter anion of the silver salt, resulting in the enhanced activity of the silver ions and consequently improved separation perfornance. Therefore, the $POZ/AgBF_4$ membranes containing valines exhibit the higher permeance as well as the higher selectivity of propylene/propane than those without valine.

은염이 함유된 고분자 전해질을 이용한 올리핀 촉진수송 분리막은 고체상에서 높은 올레핀/파라핀 분리 성능을 나타내었다 본 연구에서는, 프로필렌/프로판 분리 선택도와 투과도의 성능을 향상시키기 위해 아미노산의 일종인 valine을 고분자 전해질막에 첨가하였다. FT-lR 분광학을 통해 valine의 양이온과 은염의 음이온이 상호작용을 하고, 그 결과 valine은 은이온의 활성도를 증가시킴을 알 수 있었다. 따라서 valine을 포함하고 있는 촉진수송 분리막은 valine이 없을 때보다 더 높은 선택도와 투과도를 나타내었다.

Keywords

References

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