Effect of oxygen addition to steam and dry reforming of methane on bed temperature profile over Pt and Ni catalysts

Keiichi Tomishige, Mohammad Nurunnabi, Kenji Maruyama, Kimio Kunimori

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)

Abstract

The effect of oxygen addition to the steam and dry reforming of methane on the temperature profile of the fixed catalyst bed was investigated over Pt/Al2O3, Ni/Al2O3 with various metal loadings and commercial steam reforming Ni catalyst. The temperature profile of the catalyst bed was much dependent on the kind of metal and its loading. Especially the Pt/Al2O3 with higher loading than 1.2×10-5 mol/g-cat gave the flat temperature profile and high methane conversion. From the profiles of bed temperature measurements under various reaction conditions, one sees that the distance between the combustion and reforming zones becomes very short. This is related to the high reducibility of Pt metal itself, and Pt maintains metallic state in the combustion zone even under the presence of oxygen. In this case, the heat of combustion can be supplied to the reforming reaction effectively. On the other hand, Ni/Al 2O3 and commercial steam reforming catalyst gave high temperature at the catalyst bed inlet, and this indicates that the reaction zones exist separately.

Original languageEnglish
Pages (from-to)1103-1120
Number of pages18
JournalFuel Processing Technology
Volume85
Issue number8-10
DOIs
Publication statusPublished - 2004 Jul 15
Externally publishedYes

Keywords

  • Combustion
  • Dry reforming
  • Heat supply
  • Methane
  • Steam reforming

ASJC Scopus subject areas

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

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