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Título: | NiO / Sr doped Ce0.85Pr0.10 Er0.05O2-δ mesoarchitectured catalyst for partial oxidation of CH4 and anode fueled by H2 |
Autor: | Navarrete Algaba, Laura; Florea, Mihaela; Osiceanu, Petre; Calderon-Moreno, Jose Maria; Trandafir, Mihaela M.; Somacescu, Simona; Serra Alfaro, José Manuel CSIC ORCID | Fecha de publicación: | 1-ago-2021 | Editor: | Elsevier BV | Citación: | Microporous and Mesoporous Materials 323: 111171 (2021) | Resumen: | Our study focuses on an advanced exploratory research based on the development of the new IT-SOFCs anode compositions in conjunction with surfactants as template to obtain mesoarchitectured catalysts. We designed NiO/Sr doped CePr ErO (2.5 and 5 mol.% Sr) mesoarchitectures with robust crystalline framework following a hydrothermal synthesis route. NiO was deposited by wet impregnation and calcined in air at 900 °C, in order to assure a good interaction between Ni and mesoporous matrix. The obtained materials exhibit a cubic CeO fluorite phase with PrO and SrCeO as secondary phase traces and these were assessed as catalyst for the partial oxidation of CH over time and IT-SOFCs anode under reducing atmosphere. The electrochemical behavior as anode fed by wet H (2.5% vol. HO) was investigated in the NiO/CPS/YSZ/GDC/Pt electrochemical cells. The compositional effect on the structural properties, surface chemistry, catalytic and electrochemical performance were highlighted. Sr incorporated in the lattice, proved by X-ray Photoelectron Spectroscopy, guarantees an excellent stability of the catalysts over time for 20h, during partial oxidation of CH with high CH conversion and CO selectivity (90% in the range 700–800 °C) as well as a better performance as IT-SOFCs anode. | Versión del editor: | http://dx.doi.org/10.1016/j.micromeso.2021.111171 | URI: | http://hdl.handle.net/10261/265659 | DOI: | 10.1016/j.micromeso.2021.111171 | Identificadores: | doi: 10.1016/j.micromeso.2021.111171 issn: 1387-1811 |
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