Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Separation of $H_2$ and $N_2$ Gases by PTMSP-NaY Zeolite Composite Membranes

PTMSP-NaY Zeolite 복합막에 의한 수소-질소 기체 분리에 관한 연구

  • Kim, Ok-Su (Department of Chemistry, Sang Myung University) ;
  • Hong, Se Ryeong (College of General Studies, Sang Myung University)
  • Received : 2014.07.31
  • Accepted : 2014.08.12
  • Published : 2014.08.30
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Abstract

The PTMSP[Poly(1-trimethylsilyl-1-propyne)]-NaY zeolite composite membranes were prepared by adding 0~50 wt% NaY zeolite to PTMSP. In order to investigate the characteristics of these membranes, we used the analytical methods such as FT-IR, $^1H$-NMR, GPC, DSC, TGA, and SEM. Gas permeation experiments were carried out at $23{\sim}26^{\circ}C$, $2kgf/cm^2$, and the permselectivity of $H_2$ and $N_2$ gases through the composite membranes was studied as a function of the NaY zeolite contents. According to TGA measurements, when NaY zeolite was inserted within the PTMSP, thermal stability of PTMSP was enhanced. Based on SEM observation, NaY zeolite was dispersed in the PTMSP-NaY zeolite composite membrane with a size of $1.5{\mu}m$. The permeability of $H_2$ and $N_2$ through the PTMSP-NaY zeolite composite membranes increased as NaY zeolite content increased. On the contrary, the selectivity($H_2/N_2$) of the PTMSP-NaY zeolite composite membranes decreased as zeolite content increased.

PTMSP[Poly(1-trimethylsilyl-1-propyne)]-NaY zeolite 복합막이 PTMSP에 0~50 wt% NaY zeolite를 첨가하여 제조되었다. 이 막들의 특성을 FT-IR, $^1H$-NMR, GPC, DSC, TGA, SEM에 의해서 조사하였다. 기체투과 실험은 $23{\sim}26^{\circ}C$, $2kgf/cm^2$에서 행하였고, 복합막에 대한 수소와 질소의 투과선택성은 NaY zeolite 함량에 따라 조사하였다. TGA 측정에 의하면 PTMSP에 NaY zeolite가 첨가되었을 때 PTMSP의 열적 안정성은 향상되었다. SEM 관찰에 의하면 NaY zeolite는 PTMSP-NaY zeolite 복합막 내에 약 $1.5{\mu}m$ 크기로 분산되어 있었다. PTMSP-NaY zeolite 복합막에 대한 $N_2$와 $H_2$의 투과도는 NaY zeolite 함량이 증가하면 증가하였다. 그리고 PTMSP-NaY zeolite 복합막의 $N_2$에 대한 $H_2$의 선택성은 NaY zeolite 함량이 증가하면 감소하였다.

Keywords

References

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