Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Fabrication and Stability of V/YSZ Cermet Membrane for Hydrogen Separation

수소 분리를 위한 V/YSZ cermet 분리막의 제조 및 안정성

  • Jeon, Sung-Il (Green House Gas Research Center, Korea Institute of Energy Research) ;
  • Park, Jung-Hoon (Green House Gas Research Center, Korea Institute of Energy Research) ;
  • Lee, Sang-Jin (Green House Gas Research Center, Korea Institute of Energy Research) ;
  • Choi, Soo-Hyun (Green House Gas Research Center, Korea Institute of Energy Research)
  • 전성일 (한국에너지기술연구원 온실가스연구단) ;
  • 박정훈 (한국에너지기술연구원 온실가스연구단) ;
  • 이상진 (한국에너지기술연구원 온실가스연구단) ;
  • 최수현 (한국에너지기술연구원 온실가스연구단)
  • Received : 2010.01.13
  • Accepted : 2010.03.18
  • Published : 2010.03.30
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Abstract

The powder mixture for fabricating the cermet membranes was prepared by mechanically mixing 60 vol.% vanadium with $Y_2O_3$-stabilized $ZrO_2$ (YSZ). The powder mixture was pressed into disks, which were then sintered in vacuum at $1600^{\circ}C$ for 2 h. As-sintered membrane was dense and mounted to a stainless steel ring with brazing filler. Hydrogen fluxes of V/YSZ membrane have been measured in the range of $200{\sim}350^{\circ}C$ with 100% $H_2$. The crack was formed in the both sides of membrane at $350^{\circ}C$ and pressure of 0.5 bar. During permeation experiment, vanadium of V/YSZ membrane reacted with hydrogen to form $V_2H$ which was the origin of crack formation.

Cermet 분리막 제조를 위한 혼합 분말은 60 vol.% vanadium과 $Y_2O_3$-stabilized $ZrO_2$ (YSZ)를 기계적으로 혼합하여 준비하였다. 혼합 분말을 원판으로 압축한 후 진공 분위기에서 $1600^{\circ}C$로 2시간동안 소결하였다. 소결 분리막은 치밀하였고, 브레이징 필러를 이용하여 스테인레스 링에 장착되었다. V/YSZ 분리막의 수소 투과량은 100% 수소를 흘려 $200{\sim}350^{\circ}C$ 범위에서 측정되었다. $350^{\circ}C$, 0.5 bar압력에서 분리막의 양 표면에 균열이 형성되었다. 투과실험 동안에 V/YSZ 분리막의 vanadium은 수소와 반응하여 $V_2H$를 생성하였으며, 이로 인해 분리막이 균열되는 것을 알 수 있었다.

Keywords

References

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