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메탄을 이용한 매체 순환 개질 시스템을 위한 Ni-YSZ 촉매에서의 Y에 따른 촉매 반응 특성 연구

The Effect of Y at Ni-YSZ Catalysts for the Application to the Process of Methane Chemical-Looping Reforming

  • 김희선 (연세대학교 기계공학과) ;
  • 전유권 (연세대학교 화공생명공학과) ;
  • 황주순 (연세대학교 신에너지협동과정) ;
  • 송순호 (연세대학교 기계공학과) ;
  • 설용건 (연세대학교 화공생명공학과)
  • KIM, HEESEON (Department of Mechanical Engineering, Yonsei University) ;
  • JEON, YUKWON (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • HWANG, JUSOON (Graduate program in New Energy and Battery Engineering, Yonsei University) ;
  • SONG, SOONHO (Department of Mechanical Engineering, Yonsei University) ;
  • SHUL, YONG-GUN (Department of Chemical and Biomolecular Engineering, Yonsei University)
  • 투고 : 2015.10.01
  • 심사 : 2015.12.30
  • 발행 : 2015.12.30

초록

Nickel based oxygen transfer materials supported on two different YSZs were tested to evaluate their performance in methane chemical-looping reforming. The oxygen transfer materials of YSZs were selected with different amount of the doped yittrium in the $ZrO_2$ structure. The yittrium of 8 mol% stabilized the zirconia oxide to a cubic structure compare to the 3 mol% doping, which is known to be a good for oxygen transfer. Various nickel amounts (16wt.%, 32wt.%, 48wt.%) were loaded on the selected supports. The nickel amount of 32% shows the optimized catalyst structure with good physical properties and reducibility from the XRD, BET and H2-TPR analysis, especially when the support of 8YSZ was used. From the methane chemical-looping reforming, hydrogen was produced by methane decomposition catalyzed by Ni on both YSZs. Comparing two YSZ supports of 3YSZ and 8YSZ during the cycling tests, the catalyst with 8YSZ (Ni 32%) exhibits not only the higher methane conversion and hydrogen production but also a faster reaction rate reaching to the stable point.

키워드

참고문헌

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