Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Synthesis of C2 Chemicals from Methane in a Dielectric Barrier Discharge (DBD) Plasma Bed

메탄으로부터 촉매와 유전체 장벽 방전 반응기를 활용한 C2 화합물의 합성

  • Oh, Ji-Hwan (Chemical Biomolecular Engineering, Sogang University) ;
  • Jeon, Jong Hyun (Chemical Biomolecular Engineering, Sogang University) ;
  • Jeoung, Jaekwon (Chemical Biomolecular Engineering, Sogang University) ;
  • Ha, Kyoung-Su (Chemical Biomolecular Engineering, Sogang University)
  • 오지환 (서강대학교 화공생명공학과) ;
  • 전종현 (서강대학교 화공생명공학과) ;
  • 정재권 (서강대학교 화공생명공학과) ;
  • 하경수 (서강대학교 화공생명공학과)
  • Received : 2017.06.11
  • Accepted : 2017.08.04
  • Published : 2018.02.01
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Abstract

The direct synthesis of $C_2$ chemical directly from methane was studied by employing catalysts with ordered mesopores in a dielectric barrier discharge plasma reactor. The reaction was carried out using MgO/OMA (ordered mesoporous alumina), $MgO/{\gamma}-Al_2O_3$ and $MgO/{\alpha}-Al_2O_3$ as catalysts. When MgO/OMA was applied, it showed excellent performance in the plasma reactor using pulse-type power supply and the selectivity of $C_2$ chemicals was measured as 67%. The effects of metal oxide type, textural property of support, alumina phase and power supply type on catalytic performance were investigated especially in terms of $C_2$ chemical formation. BET (Brunauer, Emmett, Teller), X-ray diffraction, transmission electron microscope and thermogravimetric analysis were used to investigate the characterization of the catalyst before and after the reaction.

유전체 장벽 방전 반응기에서 규칙적인 메조기공 갖는 촉매를 사용하여 플라즈마 에너지를 이용한 메탄의 직접전환반응 연구를 수행하였다. 촉매는 MgO/OMA (ordered mesoporous alumina), $MgO/{\gamma}-Al_2O_3$와 $MgO/{\alpha}-Al_2O_3$를 사용하여 반응하였다. Pulse 고전압을 이용한 플라즈마 반응기에서 촉매 MgO/OMA를 사용하였을 때 $C_2$ 화합물의 선택도는 67%로 최고의 성능을 나타내었다. 금속산화물 종류, 규칙적인 메조기공 구조, 알루미나의 상변화 그리고 전원공급방식에 따른 효과를 고려하여 반응기 성능 및 생성물 분포를 비교하였다. BET (Brunauer, Emmett, Teller), X 선 회절, 주사전자현미경, 열 무게 분석으로 촉매의 반응 전후의 특성을 분석하였다.

Keywords

References

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