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Hybrid Plasma-Thermal System for Methane Conversion to Ethylene and Hydrogen
  • +4
  • Rui Liu,
  • YIngzi Hao,
  • Tong Wang,
  • Li Wang,
  • Annemie Bogaerts,
  • Hongchen Guo,
  • Yanhui Yi
Rui Liu

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YIngzi Hao
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Li Wang
Dalian Maritime University
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Annemie Bogaerts
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Hongchen Guo
Dalian university of technology
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Yanhui Yi
Dalian University of Technology
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Abstract

By combining dielectric barrier discharge plasma and external heating, we exploit a two-stage hybrid plasma-thermal system (HPTS), i.e., a plasma stage followed by a thermal stage, for direct non-oxidative coupling of CH4 to C2H4 and H2, yielding a CH4 conversion of ca. 17 %. In the two-stage HPTS, the plasma first converts CH4 into C2H6 and C3H8, which in the thermal stage leads to a high C2H4 selectivity of ca. 63 % by pyrolysis, with H2 selectivity of ca. 64 %.