Iso-octane internal reforming in a solid oxide cell reactor
| Autor: | N. Kaklidis, V. Kyriakou, George E. Marnellos, Ayman Al-Zahrani, A. Al-Musa, Mohammed H. Al-Saleh |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Analytical chemistry Oxide 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis Anode Steam reforming chemistry.chemical_compound chemistry Chemical engineering General Materials Science Solid oxide fuel cell 0210 nano-technology Octane Syngas |
| Zdroj: | Solid State Ionics. 288:135-139 |
| ISSN: | 0167-2738 |
| Popis: | This study reports on the feasibility of internal iso-octane steam reforming process in an YSZ solid oxide fuel cell reactor by employing Cu/CeO 2 as catalyst/anodic electrode. The Cu/CeO 2 anode is evaluated for its both catalytic and electro-catalytic performance. In all cases, i-C 8 H 18 was successfully reformed by H 2 O to syngas. In addition, appreciable amounts of CO 2 and CH 4 were also produced. The distribution of products was also influenced by i-C 8 H 18 thermal pyrolysis and catalytic decomposition processes leading mainly to olefins formation. At closed-circuit operation, and by applying anodic overpotentials, mainly H 2 and CO were electro-oxidized to H 2 O and CO 2 , while at cathodic polarization conditions the co-electrolysis of H 2 O and CO 2 to H 2 and CO was taking place, affecting the equilibrium reactions at the anodic chamber. During fuel cell operation, the electrochemical performance increased with cell temperature and i-C 8 H 18 /H 2 O feed ratio. The AC impedance spectroscopy analysis showed contributions both from charge and mass transfer processes, with the latter to dominate the overall cell performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect