Article
Alumina doped Fe2O3 foams by freeze-casting for redox cycling applications
Author/s | Lloreda Jurado, Pedro Javier
Balu, Krishnakumar Hernández-Saz, Jesús Chicardi Augusto, Ernesto Ferrari, Begoña Sepúlveda Ferrer, Ranier Enrique |
Department | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte |
Publication Date | 2022-10 |
Deposit Date | 2022-10-06 |
Published in |
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Abstract | Hydrogen is the next energy vector for a decarbonization society but industrial production is still methane-based. The Steam Iron Process (SIP) could provide a carbon-free production and safety storage option. Here, we ... Hydrogen is the next energy vector for a decarbonization society but industrial production is still methane-based. The Steam Iron Process (SIP) could provide a carbon-free production and safety storage option. Here, we show that a Fe2O3-3 wt% of Al2O3 foams created by freeze-casting withstand 10 redox cycles at different temperatures with no reduction in performance or pore shrinking. The use of stearic acid as a dispersant agent/binder produces the porous structure enhancement of the foam and promotes the early reduction of the hematite phase during foam sintering. The Al2O3 incorporation was detected as a solid solution in the Fe2O3 phase at the particle surface. This result is relevant as correlated the positive values of the zeta potential observed. Freeze-casted foams could improve long-term redox performances combining a unique tailored interconnected pore structure with a specific chemical composition. |
Project ID. | MAT2016-76713-P
PIF II.2A |
Citation | Lloreda Jurado, P.J., Balu, K., Hernández-Saz, J., Chicardi Augusto, E., Ferrari, B. y Sepúlveda Ferrer, R.E. (2022). Alumina doped Fe2O3 foams by freeze-casting for redox cycling applications. Journal of the European Ceramic Society, 42 (13), 5922-5931. https://doi.org/10.1016/j.jeurceramsoc.2022.06.054. |
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