한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제31권5호
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  • Pages.419-428
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  • 2020
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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활성탄 담지 몰리브덴 촉매를 이용한 합성가스 직접 메탄화 반응

Direct Methanation of Syngas over Activated Charcoal Supported Molybdenum Catalyst

  • 김성수 (한국에너지기술연구원 에너지자원순환연구실) ;
  • 이승재 (한국에너지기술연구원 에너지자원순환연구실) ;
  • 박성열 (한국에너지기술연구원 에너지자원순환연구실) ;
  • 김진걸 (순천향대학교 나노화학공학과)
  • KIM, SEONG-SOO (Energy Resources Upcycling Research Laboratory, Korea Institute of Energy Research) ;
  • LEE, SEUNG-JAE (Energy Resources Upcycling Research Laboratory, Korea Institute of Energy Research) ;
  • PARK, SUNG-YOUL (Energy Resources Upcycling Research Laboratory, Korea Institute of Energy Research) ;
  • KIM, JIN-GUL (Department of Nano Chemical Engineering, Soonchunhyang University)
  • 투고 : 2020.09.18
  • 심사 : 2020.10.30
  • 발행 : 2020.10.30
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초록

The kinetics of direct methanation over activated charcoal-supported molybdenum catalyst at 30 bar was studied in a cylindrical fixed-bed reactor. When the temperature was not higher than 400℃, the CO conversion increased with increasing temperature according to the Arrhenius law of reaction kinetics. While XRD and Raman analysis showed that Mo was present as Mo oxides after reduction or methanation, TEM and XPS analysis showed that Mo2C was formed after methanation depending on the loading of Mo precursor. When the temperature was as high as 500℃, the CO conversion was dependent not only on the Arrhenius law but also on the catalyzed reaction by nanoparticles, which came off from the reactor and thermocouple by metal dusting. These nanoparticles were made of Ni, Fe, Cr and alloy, and attributed to the formation of carbon deposit on the wall of the reactor and on the surface of the thermocouple. The carbon deposit consisted of amorphous and disordered carbon filaments.

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