| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ovtar, Simona
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2020Surface treatments and functionalization of metal‐ceramic membranes for improved enzyme immobilization performancecitations
- 2020Surface treatments and functionalization of metal‐ceramic membranes for improved enzyme immobilization performancecitations
- 2019A 4 × 4 cm2 Nanoengineered Solid Oxide Electrolysis Cell for Efficient and Durable Hydrogen Productioncitations
- 2018Oxygen Exchange and Transport in (La0.6Sr0.4)0.98FeO3-d – Ce0.9Gd0.1O1.95 Dual-Phase Compositescitations
- 2018Oxygen Exchange and Transport in (La 0.6 Sr 0.4 ) 0.98 FeO 3-d – Ce 0.9 Gd 0.1 O 1.95 Dual-Phase Compositescitations
- 2017Oxygen transport properties of tubular Ce 0.9 Gd 0.1 O 1.95 -La 0.6 Sr 0.4 FeO 3−d composite asymmetric oxygen permeation membranes supported on magnesium oxidecitations
- 2017Ceramic processing of tubular, multilayered oxygen transport membranes (Invited)
- 2017Oxygen transport properties of tubular Ce0.9Gd0.1O1.95-La0.6Sr0.4FeO3−d composite asymmetric oxygen permeation membranes supported on magnesium oxidecitations
- 2016Oxygen permeation flux through 10Sc1YSZ-MnCo2O4 asymmetric membranes prepared by two-step sinteringcitations
- 2016Oxygen permeation flux through 10Sc1YSZ-MnCo 2 O 4 asymmetric membranes prepared by two-step sinteringcitations
- 2016Beneficial Effect of Surface Decorations on the Surface Exchange of Lanthanum Strontium Ferrite and Dual Phase Composites
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article
Oxygen Exchange and Transport in (La0.6Sr0.4)0.98FeO3-d – Ce0.9Gd0.1O1.95 Dual-Phase Composites
Abstract
The chemical diffusion coefficient and the effective surface exchange coefficient (<em>k</em><sub>ex</sub>) of dual-phase (La<sub>0.6</sub>Sr<sub>0.4</sub>)<sub>0.98</sub>FeO<sub>3-d</sub> (LSF) − Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> (CGO) composites containing between 30 and 70 vol.% of CGO were determined by electrical conductivity relaxation (ECR) athigh oxygen partial pressures (10<sup>−3</sup> < <em>p</em>O<sub>2</sub> <<sub> </sub>1 atm) and at temperatures between 600°C and 900°C. The surface impurity segregation was detected by TOF-SIMS analysis. Alarge enhancement of <em>k</em><sub>ex</sub> was observed with increasing CGO fraction in the composite. <em>k</em><sub>ex</sub> was increased from 3.51 × 10<sup>−5 </sup>cm/s for a pure LSF to 1.86 × 10<sup>−4 </sup>cm/s for a 70 vol.% of CGO in the composite at 750°C for a <em>p</em>O<sub>2</sub> change from 0.2 to 1.0 atm. The experiments demonstrate that the <em>k</em><sub>ex</sub>is enhanced due to a synergistic effect between the two phases, andsuggest a direct involvement of CGO phase in the oxygensurface exchange reaction. Possible mechanisms thatcould account for the synergy are the oxygen exchange process occursalsoon the CGO surface, for example a spillover ofabsorbed oxygen ions from the LSF surface to the CGO surface or/andscavengingof impurities from one phase to another, therebyimproving the oxygen exchange properties of the cleaned phase.