Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Separation of $C_3H_6/C_3H_8$ by PEBAX-NaY Zeolite Composite Membranes

PEBAX-NaY Zeolite 복합막에 의한 $C_3H_6/C_3H_8$ 분리에 관한 연구

  • Kim, Seul-Gi (Department of Chemistry, Sang Myung University) ;
  • Lee, Hyun-Kyung (Department of Industrial Chemistry, Sang Myung University)
  • Received : 2015.01.21
  • Accepted : 2015.02.11
  • Published : 2015.02.28
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Abstract

In this study, PEBAX[poly(ether-block-amide)]-NaY zeolite composite membranes were prepared, and those prepared membranes were studied on permeability of $C_3H_6$ and $C_3H_8$, and selectivity ($C_3H_6/C_3H_8$). NaY zeolite particles in PEBAX-NaY zeolite composite membranes was dispersed as aggregated particles with the size $0.5{\sim}2.5{\mu}m$ by SEM observation. TGA measurement showed the weight loss change resulted from the amount of NaY zeolite when NaY zeolite was added into PEBAX. By gas permeation experiment, the permeabilities of $C_3H_6$ and $C_3H_8$ were decreased by the more addition NaY zeolite in PEBAX. Overall, $C_3H_6$ was having higher permeability than $C_3H_8$. The selectivity $C_3H_6/C_3H_8$ was decreased by the more NaY zeolite in PEBAX.

PEBAX[poly(ether-block-amide)]에 NaY zeolite를 첨가하여 PEBAX-NaY zeolite 복합막을 제조하고 제조한 복합막에 대한 $C_3H_6$와 $C_3H_8$의 투과도와 선택도($C_3H_6/C_3H_8$)에 대하여 조사하였다. SEM관찰에 의하면 PEBAX-NaY zeolite 복합막 내에 NaY zeolite는 $0.5{\sim}2.5{\mu}m$의 덩어리 상태로 분산되어 있었다. TGA측정에 의하면 PEBAX에 NaY zeolite가 첨가되면 첨가된 NaY zeolite 양만큼의 질량 변화를 알 수 있었다. 기체투과 실험에 의하면 PEBAX-NaY zeolite 복합막 내의 NaY zeolite함량이 증가할수록 $C_3H_6$와 $C_3H_8$의 투과도는 감소하였고, $C_3H_6$의 투과도는 $C_3H_8$의 투과도보다는 크게 나타났으며, 기체선택도($C_3H_6/C_3H_8$)는 감소하는 경향을 나타내었다.

Keywords

References

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