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 language | English (US) |
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Pages (from-to) | 6391-6396 |
Number of pages | 6 |
Journal | International Journal of Hydrogen Energy |
Volume | 38 |
Issue number | 15 |
DOIs | |
State | Published - 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