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- W4460690 abstract "The oxido-reduction of La0.7Sr0.3Co0.8Fe0.2O3−δ (LSCF7382) perovskite oxide catalyst was studied using O2 thermodesorption and H2 temperature-programmed reduction techniques as well as cyclic voltammetry performed on LSCF7382 thin film deposited on gadolinia doped ceria solid electrolyte. The O2-TPD profile of the attrited powder used for thin film elaboration evidenced two types of desorbed oxygen; i.e. weakly adsorbed oxygen species and lattice oxygen. The annealing treatment decreased the amount of weakly adsorbed oxygen. H2-TPR and cyclic voltammetry evidenced two reduction processes that retained the perovskite structure in LSCF7382. They were tentatively assigned to the successive reduction of Co4+ to Co3+ and Co2+. The anodic peak observed on the cyclic voltammograms at positive overpotentials could be related to the phenomenom of oxygen back-spillover from the triple phase boundary to the LSCF7382/gas interface." @default.
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- W4460690 date "2011-02-11" @default.
- W4460690 modified "2023-10-18" @default.
- W4460690 title "Oxido-reduction properties of La0.7Sr0.3Co0.8Fe0.2O3−δ perovskite oxide catalyst" @default.
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- W4460690 doi "https://doi.org/10.1016/j.ssi.2010.11.012" @default.
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