Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Fabrication of Pd/YSZ Cermet Membrane for Hydrogen Separation

수소 분리를 위한 Pd/YSZ Cermet 분리막의 제조

  • Jeon, Sung-Il (Green House Gas Center, Korea Institute of Energy Research Korea Institute of Energy Research) ;
  • Park, Jung-Hoon (Green House Gas Center, Korea Institute of Energy Research Korea Institute of Energy Research) ;
  • Lee, Yong-Taek (Department of Chemical Engineering, Chung Nam National University)
  • 전성일 (한국에너지기술연구원 온실가스센터) ;
  • 박정훈 (한국에너지기술연구원 온실가스센터) ;
  • 이용택 (충남대학교 화학공학과)
  • Received : 2011.03.15
  • Accepted : 2011.06.17
  • Published : 2011.06.30
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Abstract

Metal-ceramic composite membrane have been developed to separate hydrogen from mixed gases, particularly product streams generated during coal gasification and methane reforming. Cermet membrane was fabricated with palladium as hydrogen-permeable metal and $Y_2O_3$-stabilized $ZrO_2$ (YSZ) as ceramic supporter. As-prepared membrane showed dense structure with continuous channel of palladium. The hydrogen flux of Pd/YSZ membrane have been measured in the range of 0.5~2 atm with 100% hydrogen gas. The results indicate that the hydrogen flux was 0.333 mL/$min{\cdot}cm^2$ at $450^{\circ}C$ and 2 atm. The crack was formed in the surface and cross-section of membrane.

금속-세라믹 복합 분리막은 특히 석탄가스화 공정이나 메탄 개질에서 발생되는 혼합가스로부터 수소를 분리하기 위해 개발되어졌다. 수소투과 금속인 팔라듐과 세라믹 지지체로 $Y_2O_3$-stabilized $ZrO_2$ (YSZ)를 이용하여 cermet 수소분리막을 제조하였다. 이렇게 제조된 분리막은 팔라듐의 연속상이 잘 발달된 치밀 구조를 보였다. Pd/YSZ 분리막의 수소 투과량은 100% 수소를 흘려 0.5~2 atm에서 측정되었다. 수소 투과량은 $450^{\circ}C$, 2 atm에서 0.333 mL/$min{\cdot}cm^2$를 보였다. 수소 투과 후 분리막의 표면과 단면에서 균열이 형성되었다.

Keywords

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