DOI QR코드

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Modified glycine-nitrate process(MGNP)로 합성한 BaCo1-x-yFexZryO3-δ 산소투과도 및 수소생산성

Oxygen Permeation and Hydrogen Production of BaCo1-x-yFexZryO3-δ by a Modified Glycine-nitrate Process (MGNP)

  • 이은정 (인하대학교 세라믹공학과) ;
  • 황해진 (인하대학교 세라믹공학과)
  • Yi, Eunjeong (School of Material Science and Engineering, InHa Univ.) ;
  • Hwang, Haejin (School of Material Science and Engineering, InHa Univ.)
  • 투고 : 2012.11.28
  • 심사 : 2013.02.28
  • 발행 : 2013.02.28

초록

A dense mixed ionic and electronic conducting ceramic membrane is one of the most promising materials because it can be used for separation of oxygen from the mixture gas. The $ABO_3$ perovskite structure shows high chemical stability at high temperatures under reduction and oxidation atmospheres. $BaCo_{1-x-y}Fe_xZr_yO_{3-{\delta}}$ (BCFZ) was well-known material as high mechanical strength, low thermal conductivity and stability in the high valence state. Glycine Nitrate Process (GNP) is rapid and effective method for powder synthesis using glycine as a fuel and show higher product crystallinity compared to solid state reaction and citrate-EDTA method. BCFZ was fabricated by modified glycine nitrate process. In order to control the burn-up reaction, $NH_4NO_3$ was used as extra nitrate. According to X-Ray Diffraction (XRD) results, BCFZ was single phase regardless of Zr dopants from y=0.1 to 0.3 on B sites. The green compacts were sintered at $1200^{\circ}C$ for 2 hours. Oxygen permeability, methane partial oxidation rate and hydrogen production ability of the membranes were characterized by using Micro Gas Chromatography (Micro GC) under various condition. The high oxygen permeation flux of BCFZ 1-451 was about $1ml{\cdot}cm^{-2}s^{-1}$. Using the humidified Argon gas, BCFZ 1-433 produced hydrogen about $1ml{\cdot}cm^{-2}s^{-1}$.

키워드

참고문헌

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