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Open AccessArticle

Asymmetric LSCF Membranes Utilizing Commercial Powders

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Ricerca sul Sistema Energetico—RSE SpA, Strada Torre della Razza, I-29122 Piacenza, Italy
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Ricerca sul Sistema Energetico—RSE SpA, Via Rubattino 54, I-20134 Milan, Italy
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Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), 52425 Jülich, Germany
*
Author to whom correspondence should be addressed.
Materials 2020, 13(3), 614; https://doi.org/10.3390/ma13030614
Received: 9 December 2019 / Revised: 17 January 2020 / Accepted: 28 January 2020 / Published: 30 January 2020
(This article belongs to the Special Issue Membrane Materials for Gas Separation)
Powders of constant morphology and quality are indispensable for reproducible ceramic manufacturing. In this study, commercially available powders were characterized regarding their microstructural properties and screened for a reproducible membrane manufacturing process, which was done by sequential tape casting. Basing on this, the slurry composition and ratio of ingredients were systematically varied in order to obtain flat, crack-free green tapes suitable for upscaling of the manufacturing process. Debinding and sintering parameters were adjusted to obtain defect-free membranes with diminished bending. The crucial parameters are the heating ramp, sintering temperature, and dwell time. The microstructure of the asymmetric membranes was investigated, leading to a support porosity of approximately 35% and a membrane layer thickness of around 20 µm. Microstructure and oxygen flux are comparable to asymmetric La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) membranes manufactured from custom-made powder, showing an oxygen flux of > 1 mL⋅cm−2⋅min at 900 °C in air/Ar gradient. View Full-Text
Keywords: oxygen transport membrane; tape casting; ceramic powder characterization; asymmetric membrane manufacturing oxygen transport membrane; tape casting; ceramic powder characterization; asymmetric membrane manufacturing
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MDPI and ACS Style

Fedeli, P.; Drago, F.; Schulze-Küppers, F.; Baumann, S. Asymmetric LSCF Membranes Utilizing Commercial Powders. Materials 2020, 13, 614. https://doi.org/10.3390/ma13030614

AMA Style

Fedeli P, Drago F, Schulze-Küppers F, Baumann S. Asymmetric LSCF Membranes Utilizing Commercial Powders. Materials. 2020; 13(3):614. https://doi.org/10.3390/ma13030614

Chicago/Turabian Style

Fedeli, Paolo; Drago, Francesca; Schulze-Küppers, Falk; Baumann, Stefan. 2020. "Asymmetric LSCF Membranes Utilizing Commercial Powders" Materials 13, no. 3: 614. https://doi.org/10.3390/ma13030614

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