Dry reforming of methane has no future for hydrogen production: Comparison with steam reforming at high pressure in standard and membrane reactors

S. Ted Oyama, Pelin Hacarlioglu, Yunfeng Gu, Doohwan Lee

Research output: Contribution to journalArticlepeer-review

164 Scopus citations

Abstract

The methane dry-reforming and steam reforming reactions were studied as a function of pressure (1-20 atm) at 973 K in conventional packed-bed reactors and a membrane reactors. For the dry-reforming reaction in a conventional reactor the production yield of hydrogen rose and then decreased with increasing pressure as a result of the reverse water-gas shift reaction in which the hydrogen reacted with the reactant CO2 to produce water. For the steam reforming reaction the production yield of hydrogen kept increasing with pressure because the forward water-gas shift reaction produced additional hydrogen by the reaction of CO with water. In the membrane reactors the methane conversion and the hydrogen production yields were higher for both the dry-reforming and steam reforming reactions, but for the dry reforming at high pressure half of the hydrogen was transformed into water. Thus, the dry-reforming reaction is not practical for producing hydrogen.

Original languageEnglish
Pages (from-to)10444-10450
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number13
DOIs
StatePublished - Jul 2012

Keywords

  • Dry reforming
  • High pressure
  • Membrane reactors
  • Methane
  • Steam reforming

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