Kinetic study of iso-octane steam reforming over a nickel-based catalyst

Praharso, A. A. Adesina, D. L. Trimm*, N. W. Cant

*Corresponding author for this work

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The kinetics of iso-octane steam reforming over a nickel based catalyst has been examined as a function of iso-octane and steam partial pressures at various temperatures. The reaction order is 0.2 with respect to iso-octane, suggesting strong coverage of nickel by iso-octane and 0.5 with respect to steam, indicating dissociative adsorption of steam. Indeed, a Langmuir-Hinshelwood (LH) mechanism requiring the dissociative adsorption of iso-octane and steam on two different sites appeared to be the most plausible pathway for the steam reforming reaction. The activation energy of 44 ± 2.2 kJ mol-1 estimated from the LH model is consistent with the trend previously reported for other lower hydrocarbons.

Original languageEnglish
Pages (from-to)131-136
Number of pages6
JournalChemical Engineering Journal
Volume99
Issue number2
DOIs
Publication statusPublished - 15 Jun 2004

Keywords

  • Gasoline
  • Iso-Octane
  • Kinetic
  • Nickel
  • Steam reforming

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