Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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$CO_2$ permeation behavior of Pebax-2533 plate membranes prepared from 1-Propanol/n-Butanol mixed solvents

1-프로판올/n-부탄올 혼합용매로부터 제조된 Pebax-2533 판형 분리막의 $CO_2$ 투과거동 연구

  • Lee, Sang Hoon (Graduate School of Green Energy Technology, Chungnam National University) ;
  • Kim, Min Zy (Graduate School of Green Energy Technology, Chungnam National University) ;
  • Cho, Churl Hee (Graduate School of Green Energy Technology, Chungnam National University) ;
  • Han, Moon Hee (Graduate School of Green Energy Technology, Chungnam National University)
  • 이상훈 (충남대학교 녹색에너지기술전문대학원) ;
  • 김민지 (충남대학교 녹색에너지기술전문대학원) ;
  • 조철희 (충남대학교 녹색에너지기술전문대학원) ;
  • 한문희 (충남대학교 녹색에너지기술전문대학원)
  • Received : 2013.10.03
  • Accepted : 2013.10.09
  • Published : 2013.10.31
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Abstract

In the present study, Pebax-2533 plate membranes were prepared by drying precursor solutions which were obtained by dissolving Pebax-2533 polymer in 1-Propanol/n-Butanol mixed solvents. And then the $CO_2$ and $N_2$ permeation behaviors were tested by using a time-lag system. The prepared Pebax-2533 plate membranes showed a considerable $CO_2/N_2$ separation performance : the $CO_2$ permeability was 130 to 288 barr, and the $CO_2/N_2$ permselectivity was 5-8. The $CO_2$ permeation data obtained by varying feed pressure, permeation temperature, and solvent composition announced that not only the $CO_2$ sorption but also the $CO_2$ diffusion is equally important in the overall $CO_2$ permeation.

본 논문에서는 Pebax-2533 판형 분리막을 1-프로판올과 n-부탄올 혼합용매를 이용하여 용해, 건조하여 제조하였고 time-lag 장치를 이용하여 $CO_2$, $N_2$ 투과특성을 평가하였다. 제조된 분리막은 평가조건에 따라서 130-288 barrer의 $CO_2$ 투과율을 가졌으며, $CO_2/N_2$ 투과선택도는 5-8이었다. Time-lag 장치의 주입부 압력이 증가함에 따라서, 투과온도가 낮아짐에 따라서, 그리고 혼합용매의 n-부탄올 양이 증가함에 따라서 $CO_2$ 투과도는 감소하였다. 이러한 실험 자료는 Pebax-2533 분리막의 $CO_2$ 투과율이 $CO_2$ 용해에 매우 의존할 것이라 예측과 달리, $CO_2$ 용해뿐만 아니라 $CO_2$ 확산도 매우 중요한 단계임을 의미하였다.

Keywords

References

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