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@INPROCEEDINGS{Unije:838685,
author = {Unije, Unoaku Victoria and Mücke, R. and Schulze-Küppers,
F. and Baumann, S. and Guillon, O.},
title = {{T}he effect of two different support microstructure of an
asymmetric membrane with comparable porosities on flux},
reportid = {FZJ-2017-07251},
year = {2017},
abstract = {Oxygen transport membranes (OTM) display a new technology
for the generation of energy-efficient oxygen. These
membranes can be used in low-pollutant power plants and
oxygen generators or membrane reactors in the chemical
industry and health care. Research studies over the years
have found that the thinner the dense membrane, the higher
the observed flux, but the lower the mechanical stability.
This motivated the state of the art processing of an
asymmetric membrane; whereby the thin dense membrane is
supported by a porous structure. However, the microstructure
of the porous support in the membrane assembly affects the
overall flux significantly. To study and optimize this
effect, tape cast and freeze cast
Ba0.5Sr0.5(Co0.8Fe0.2)0.97Zr0.03O3– (BSCFZ) asymmetric
membranes having comparable support porosities but different
pore architecture were processed. Permeation measurements
showed that the flux from the two membranes yielded
comparable flux, which is not in agreement to literature.A
computer tomography of the membranes was acquired to
understand, simulate and optimize the porous support. This
effect was simulated by applying the binary friction model
(BFM) for the support together with a modified Wagner
equation for the dense membrane, using transport relevant
parameters obtained from computer tomography data of the
freeze cast, and tape cast support using Geodict software.},
month = {Sep},
date = {2017-09-26},
organization = {Geodict Usermeeting 2017,
Kaiserslautern (Germany), 26 Sep 2017 -
27 Sep 2017},
subtyp = {Invited},
cin = {IEK-1 / JARA-ENERGY},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113) / HITEC - Helmholtz Interdisciplinary Doctoral
Training in Energy and Climate Research (HITEC)
(HITEC-20170406)},
pid = {G:(DE-HGF)POF3-113 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/838685},
}