Korean Chemical Engineering Research

  • 제51권3호
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  • Pages.319-324
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  • 2013
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  • 0304-128X(pISSN)
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  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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Ni-Pd/CeO2-ZrO2 금속모노리스 촉매체를 사용한 부분산화반응에 의한 합성가스 제조

Syngas Production by Partial Oxidation Reaction over Ni-Pd/CeO2-ZrO2 Metallic Monolith Catalysts

  • 양정민 (충북대학교 화학공학과, 산업과학기술연구소) ;
  • 최정은 (충북대학교 화학공학과, 산업과학기술연구소) ;
  • 김용진 (에어코리아(주)) ;
  • 이종대 (충북대학교 화학공학과, 산업과학기술연구소)
  • Yang, Jeong Min (Dept. of Chemical Engineering, Research Industrial Sci. & Tech., Chungbuk National University) ;
  • Choe, Jeong-Eun (Dept. of Chemical Engineering, Research Industrial Sci. & Tech., Chungbuk National University) ;
  • Kim, Yong Jin (Air korea) ;
  • Lee, Jong Dae (Dept. of Chemical Engineering, Research Industrial Sci. & Tech., Chungbuk National University)
  • 투고 : 2013.02.22
  • 심사 : 2013.03.19
  • 발행 : 2013.06.01
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초록

합성가스를 생산하기 위한 메탄의 부분산화반응 특성을 $Ni/CeO_2-ZrO_2$, $Ni-Ru/CeO_2-ZrO_2$와 $Ni-Pd/CeO_2-ZrO_2$ 촉매체를 이용하여 조사하였다. 메탄의 부분 산화 개질 반응에서 촉매의 높은 활성과 안정성을 위하여 허니컴 구조의 금속모노리스 촉매 체를 적용하였다. 촉매분석은 XRD와 FE-SEM을 사용하였으며, 제조된 촉매들의 합성가스 제조 특성은 반응물 비(O/C), GHSV와 온도를 변화시키면서 연구하였다. 개질 실험에서 사용된 촉매 중에서 $Ni-Pd/CeO_2-ZrO_2$ 촉매 체가 가장 높은 활성을 보여 주었으며, $900^{\circ}C$, GHSV=10,000 $h^{-1}$과 O/C=0.55에서 99%의 메탄 전환율을 얻었다. O/C 비가 증가함에 따라 수소 yield는 증가되고, 반면에 CO yield는 거의 일정하게 유지됨을 확인할 수 있었다. 또한 GHSV가 증가할수록 메탄의 전환율은 감소하였으며, 높은 메탄의 전환율을 얻을 수 있는 GHSV의 범위는 10,000 $h^{-1}$ 이하임을 알 수 있었다.

The partial oxidation reaction of methane was investigated to produce syngas with $Ni/CeO_2-ZrO_2$, $Ni-Ru/CeO_2-ZrO_2$ and $Ni-Pd/CeO_2-ZrO_2$ catalysts. Honeycomb metallic monolith was applied in order to obtain high catalytic activity and stability in partial oxidation reforming. The catalysts were characterized by XRD and FE-SEM. The influence of various catalysts on syngas production was studied for the feed ratio (O/C), GHSV and temperature. Among the catalysts used in the experiment, the $Ni-Pd/CeO_2-ZrO_2$ catalyst showed the highest activity. The 99% of $CH_4$ conversion was obtained at the condition of T=$900^{\circ}C$, GHSV=10,000 $h^{-1}$ and feed ratio O/C=0.55. It was confirmed that $H_2$ yield increased slightly as O/C ratio increased, while CO yield remained almost constant. Also, $CH_4$ conversion decreased as GHSV increased. It was found that the safe range of GHSV for high $CH_4$ conversion was estimated to be less than 10,000 $h^{-1}$.

키워드

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피인용 문헌

  1. 석탄을 사용한 CO가스 제조를 위한 CO2 전환기술 vol.32, pp.4, 2015, https://doi.org/10.12925/jkocs.2015.32.4.712