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The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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An Optimization of Aging Time for Low-Temperature Water-Gas Shift Over Cu-Zn-Al Catalyst

저온 수성가스 전이 반응용 Cu-Zn-Al 촉매의 숙성시간 최적화

  • SHIM, JAE-OH (Department of Environmental Engineering, Yonsei University) ;
  • NA, HYUN-SUK (Department of Environmental Engineering, Yonsei University) ;
  • AHN, SEON-YONG (Department of Environmental Engineering, Yonsei University) ;
  • JANG, WON-JUN (Department of Environment and Energy Engineering, Kyungnam University) ;
  • ROH, HYUN-SEOG (Department of Environmental Engineering, Yonsei University)
  • 심재오 (연세대학교 환경공학부) ;
  • 나현석 (연세대학교 환경공학부) ;
  • 안선용 (연세대학교 환경공학부) ;
  • 장원준 (경남대학교 환경에너지공학과) ;
  • 노현석 (연세대학교 환경공학부)
  • Received : 2019.03.18
  • Accepted : 2019.04.30
  • Published : 2019.04.30
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Abstract

Cu-Zn-Al catalysts were prepared via co-precipitation method for low-temperature water-gas shift (LT-WGS) reaction under practical reaction condition. Aging time was systematically changed to find optimum point for LT-WGS under practical condition. The Cu-Zn-Al catalyst aged for 72 hours showed the highest CO conversion within low-temperature range as well as very stable catalytic activity for 200 hours despite the practical reaction condition.

Keywords

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Fig. 1. XRD patterns of Cu-Zn-Al catalysts with various aging time

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Fig. 2. TPR patterns of Cu-Zn-Al catalysts with various aging time

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Fig. 3. CO conversion with reaction temperature over Cu-Zn-Al catalysts with various aging time under practical reaction condition

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Fig. 5. The summarization of BET surface area, reduction degree, and the reaction results over C8H and C48H catalysts with varying reduction temperature

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Fig. 6. CO conversion with time on stream over C72H catalyst under practical reaction condition (T=220℃, GHSV=16,000 h-1)

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Fig. 4. LT-WGS reaction under practical reaction condition using C8H and C48H catalysts with varying reduction temperature

Table 1. Characteristics of Cu-Zn-Al catalysts prepared by different aging time

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Table 2. Calculated reduction degree of the Cu-Zn-Al cata-lysts with varying aging time

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