Journal Article

FZJ-2022-01766

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Performance study of asymmetric oxygen transport membranes with vertically channelled pores by phase inversion tape casting

Liu, Y. ; Wilkner, K.FZJ* ; Unije, U. V. ; Baumann, S. (Corresponding author)FZJ* ; Mücke, R.FZJ* ; Schulze-Küppers, F.FZJ* ; Guillon, O.FZJ*

2022
Elsevier Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/30962  doi:10.1016/j.oceram.2022.100248

Abstract: Asymmetric oxygen transport membranes have been extensively studied revealing the importance of the support porosity. In this study, asymmetric membranes with vertically channelled pores were prepared from Ba0.5Sr0.5(Co0.8Fe0.2)0.97Zr0.03O3-δ (BSCF-Z) by phase inversion tape casting. The rate-limiting effects of the membrane layer thickness, the support structure, and the activation layers were thoroughly analysed. This entails comparing the permeation rate of the samples with the membrane layer on different sides of the channelled supports. Pore tortuosity and computed permeability were evaluated from 3D-X-ray computed tomography and compared to previously reported asymmetric membranes prepared by tape-casting and freeze-drying. Due to a lower pore tortuosity, the channelled supports have an advantage in gas transport over the tape cast and freeze cast supports. However, this is compensated by a thicker membrane layer (∼54 μm) resulting in similar performance compared to the thinner membrane layers (∼20 μm) with freeze cast and tape cast supports.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 1232 - Power-based Fuels and Chemicals (POF4-123) (POF4-123)

Appears in the scientific report 2022

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Database coverage:
; ; ; DOAJ Seal ; SCOPUS

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