A Circulating Fluidized Bed CH4 Reformer: Performance of Supported Ni Catalysts

Masahiko Matsukata*, Tatsumi Matsushita, Korekazu Ueyama

*この研究の対応する著者

研究成果: Article査読

30 被引用数 (Scopus)

抄録

A methane reformer using a circulating fluidized bed is proposed for the production of hydrogen and synthesis gas (syngas). A catalyst is circulated between two reactors for the catalytic decomposition of methane to hydrogen and carbon and for the gasification of the carbon deposited on the catalyst. Of the metals Cu, Fe, Ni, and W, only Ni showed catalytic activity for the decomposition of methane at 873-1023 K. While studying the structure of the catalyst, it was found that the form of nickel was circulated between oxide and metal through reduction with methane and oxidation with carbon dioxide. X-ray diffraction (XRD) and scanning electron microscopy (SEM) suggested that filamentous carbon having a graphitic structure was gasified with carbon dioxide and that carbon having a mosslike morphology was hardly gasified and caused deactivation of the catalyst. The reactivity of the carbon which was able to be gasified was not altered with cycles of methane decomposition and carbon dioxide gasification.

本文言語English
ページ(範囲)822-828
ページ数7
ジャーナルEnergy and Fuels
9
5
DOI
出版ステータスPublished - 1995 9
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 燃料技術
  • エネルギー工学および電力技術

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