Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Composite TiN-Al2O3 Syntheses and Hydrogen Permeability Characteristics Evaluation

복합 TiN-Al2O3 합성과 수소투과도 특성 평가

  • CHO, KYOUNG-WON (Center for Research Facilities Korea National University of Transportation) ;
  • LEE, YOUNG-HWAN (Department of Materials Science & Engineering, Korea National University of Transportation) ;
  • HAN, JEONG-HEUM (Department of Materials Science & Engineering, Korea National University of Transportation) ;
  • YU, JE-SEON (Department of Materials Science & Engineering, Korea National University of Transportation) ;
  • HONG, TAE-WHAN (Department of Materials Science & Engineering, Korea National University of Transportation)
  • 조경원 (한국교통대학교 공동실험실습관) ;
  • 이영환 (한국교통대학교 화공신소재고분자공학부 신소재공학전공) ;
  • 한정흠 (한국교통대학교 화공신소재고분자공학부 신소재공학전공) ;
  • 유제선 (한국교통대학교 화공신소재고분자공학부 신소재공학전공) ;
  • 홍태환 (한국교통대학교 화공신소재고분자공학부 신소재공학전공)
  • Received : 2020.02.13
  • Accepted : 2020.04.30
  • Published : 2020.04.30
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Abstract

To utilize hydrogen energy, high-yield, high-purity hydrogen needs to be produced; therefore, hydrogen separation membrane studies are being conducted. The membrane reactor that fabricates hydrogen needs to have high hydrogen permeability, selective permeability, heatresistant and a stable mechanical membrane. Dense membranes of Pd and Pd alloys are usually used, but these have drawbacks associated with high cost and durability. Therefore, many researchers have studied replacing Pd and Pd alloys. Dense TiN membrane is highly selective and can separate high-purity hydrogen. The porous alumina has a high permeation rate but low selectivity; therefore, separating high-purity hydrogen is difficult. To overcome this drawback, the two materials are combined as composite reclamations to produce a separation membrane with a high penetration rate and high selectivity. Accordingly, TiN-alumina was manufactured using a high-energy ball mill. The TiN-alumina membrane was characterized by X-ray diffraction analysis, scanning electron microscopy, and energy dispersive spectroscopy. The hydrogen permeability of the TiN-alumina membrane was estimated by a Sievert-type hydrogen permeation membrane apparatus. Due to the change in the diffusion mechanism, the transmittance value was lower than that of the general TiN ceramic separator.

Keywords

References

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