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

Masahiko Matsukata, Tatsumi Matsushita, Korekazu Ueyama

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)822-828
Number of pages7
JournalEnergy and Fuels
Volume9
Issue number5
DOIs
Publication statusPublished - 1995 Sep

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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