Co-electrolysis of H2O and CO2 with a Solid Oxide Cell operating at intermediate temperatures
| Autor: | Massimiliano Lo Faro, Stefano Trocino, Sabrina C. Zignani, Antonino S. Aricò |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | 22nd WHEC 2018-World Hydrogen Energy Conference 2018, Rio de Janeiro-Brasile, 17-22/06/2018 info:cnr-pdr/source/autori:Massimiliano Lo Faro, Stefano Trocino, Sabrina C. Zignani, Antonino S. Aricò/congresso_nome:22nd WHEC 2018-World Hydrogen Energy Conference 2018/congresso_luogo:Rio de Janeiro-Brasile/congresso_data:17-22%2F06%2F2018/anno:2018/pagina_da:/pagina_a:/intervallo_pagine |
| Popis: | An investigation of methane production using solid oxide electrolysis was carried out. A conventional solid oxide cell based on Ni supporting cathode, thin yttria-stabilized zirconia electrolyte, yttria-doped ceria interlayer, and strontium-doped lanthanum cobaltite and ferrite-based perovskite anode (Ni-YSZ/YSZ/YDC/LSFC) was used for the reduction of CO2 and water to syngas. The experiment carried out at 500 °C was assisted by H2 added to the reactant in various amounts to maintain the Ni sites in a metallic state. This was necessary to favour CO2 reaction and to avoid any ohmic constraint that may derive from the occurrence of Ni re-oxidation as consequence of the presence of oxidising species like CO2 and water. The outlet gas was analysed by gas chromatography. The presence of CO and CH4 beside CO2 and H2 was detected in the outlet stream. Analysis of outlet gas composition revealed that CO and traces of CH4 were produced by both electrochemical and catalytic mechanisms. Suitable conversions were achieved with dry gases although if the risk of carbon formation at cathode/electrolyte interface is very high under this conditions. |
| Databáze: | OpenAIRE |
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