Direct decomposition of methane using helium RF plasma

Kazunari Katayama, Satoshi Fukada, Masabumi Nishikawa

研究成果: ジャーナルへの寄稿学術誌査読

17 被引用数 (Scopus)


In the fuel cycle system of a fusion reactor, tritium is extracted from exhaust gas and reused. When graphite materials are used in a part of plasma facing components, tritiated methane is contained in exhaust gas. Plasma decomposition is one of the techniques for extracting hydrogen from hydrocarbon. In order to evaluate direct decomposition of methane using helium RF plasma, a flow-type plasma reactor utilizing capacitively coupled plasma was developed and direct decomposition of methane was demonstrated. The decomposition rate of methane by helium plasma was proportional to the supplied RF power. However, it became small when total pressure of gas was high. A part of hydrogen generated from methane was retained in carbon deposits on the electrode. However, the accumulated hydrogen and carbon were effectively removed by the discharge-cleaning with oxygen plasma.

ジャーナルFusion Engineering and Design
出版ステータス出版済み - 12月 2010

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 原子力エネルギーおよび原子力工学
  • 材料科学一般
  • 機械工学


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