% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@INPROCEEDINGS{Unije:838680,
author = {Unije, Unoaku Victoria and Mücke, Robert and Baumann,
Stefan and Guillon, Olivier},
title = {{M}odelling the {S}upport {E}ffect on the {F}lux {T}hrough
an {A}symmetric {O}xygen {T}ransport {G}as {S}eparation
{M}embranes},
school = {RWTH Aachen},
reportid = {FZJ-2017-07246},
year = {2016},
abstract = {Oxygen Transport Membranes (OTM) display a new technology
for energy-efficient oxygen generation which can be used in
low-pollutant power plants and oxygen generators or membrane
reactors in the chemical industry and health care. Low ionic
resistance of the membrane and high mechanical stability
typically demands the usage of an asymmetric design
comprising a thin functional membrane and a thicker porous
support. The overall membrane performance is strongly
affected by the microstructure of this porous structural
layer. The effect of the support on the flux performance has
been thus studied applying the Binary Friction Model (BFM,
including binary and Knudsen diffusion and viscous flow) for
the support together with a modified Wagner equation for the
dense membrane. The parameters describing the tape-cast
porous medium were obtained by numerical diffusion and flow
simulations based on micro computed tomography (µCT) data.
Using different flow conditions (3-end, 4-end) and oxygen as
feed gas, the effect of the support thickness, pore
diameter, position (either on the feed or permeate side) of
the support on the flux were investigated. Knudsen diffusion
was found to dominate the transport process for small pore
sizes (~2µm) in particular for the 3-end mode with the
support on the permeate side being most pore size sensitive,
whereas for the other configurations the viscous flow was of
higher significance. For typical membrane assembly geometry
with a membrane thickness of 20 µm and a support thickness
of 0.9 mm, the flux became membrane limited starting from a
pore size of approx. 5 µm.},
month = {Oct},
date = {2016-10-09},
organization = {8th International Conference on
Multiscale Materials Modelling, Dijon
(France), 9 Oct 2016 - 14 Oct 2016},
subtyp = {After Call},
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)24},
url = {https://juser.fz-juelich.de/record/838680},
}