Study of partial oxidation reforming of methane to syngas over self-sustained electrochemical promotion catalyst

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Abstract

A self-sustained electrochemical promotion (SSEP) catalyst is synthesized for partial oxidation reforming (POXR) of CH4 to produce syngas (H2 and CO) at a relatively low temperature ranging from 350 to 650 °C. The SSEP catalyst is comprised of 4 components: microscopic Ni/Cu/CeO2 anode, La0.9Sr0.1MnO3 cathode, copper as electron conductor, and yttria-stabilized-zirconia as oxygen ion conductor, which form microscopic electrochemical cells to enable the self-sustained electrochemical promotion for the POXR process. The SSEP catalyst exhibited much better catalytic performance in POXR of CH4 than a Ni-Cu-CeO2 catalyst and a commercial Pt-CeO2 catalyst. The CH4 conversion over the SSEP catalyst is 29.4% at 350 °C and reaches 100% at 550 °C and the maximum selectivity to H2 is on the level of 90% at 450-650 °C under a GHSV of 42,000 h-1. The mechanism of the SSEP is discussed.

Original languageEnglish (US)
Pages (from-to)6391-6396
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number15
DOIs
StatePublished - May 20 2013

Keywords

  • Electrochemical promotion
  • Methane
  • Partial oxidation
  • Self-sustained
  • Syngas

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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