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@ARTICLE{Zeng:891375,
author = {Zeng, Fanlin and Baumann, Stefan and Malzbender, Jürgen
and Nijmeijer, Arian and Winnubst, Louis and Guillon,
Olivier and Schwaiger, Ruth and Meulenberg, Wilhelm A.},
title = {{E}nhancing oxygen permeation of solid-state reactive
sintered {C}e0.8{G}d0.2{O}2--{F}e{C}o2{O}4 composite by
optimizing the powder preparation method},
journal = {Journal of membrane science},
volume = {628},
issn = {0376-7388},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2021-01464},
pages = {119248 -},
year = {2021},
abstract = {Dual phase membranes with mixed ionic-electronic
conductivity exhibit promising properties for applications
in pure oxygen separation under harsh atmospheres. The
conductivity of an individual phase within dual phase
membranes is often attenuated by the blocking effects from
the other phase(s). Here, facile but effective ways are
reported to alleviate such effects by optimizing the powder
preparation method for a solid-state reactive sintering
process. Powder mixtures with a nominal composition 85
$wt\%$ Ce0.8Gd0.2O2-δ:15 $wt\%$ FeCo2O4 were prepared by
traditional wet ball milling method, as well as a moderate
dry mixing approach. Using a modified wet ball milling
procedure, homogenous powder mixtures with fine particle
size are obtained and the synthesized membrane shows a fine
and homogenous microstructure that realizes high oxygen
permeance. Besides, a novel “dual phase” membrane having
one ionic conductive monophase zone and one mixed
ionic-electronic conductive multiphase zone was sintered
using dry-mixed powder mixtures. With individual mesoscale
percolations, two phase zones provide relatively straight
paths for ionic conduction and electronic conduction,
respectively, which contributes to achieving the highest
oxygen permeance among all the sintered membranes.},
cin = {IEK-1 / IEK-2 / JARA-ENERGY},
ddc = {570},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013 /
$I:(DE-82)080011_20140620$},
pnm = {123 - Chemische Energieträger (POF4-123)},
pid = {G:(DE-HGF)POF4-123},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000697104000002},
doi = {10.1016/j.memsci.2021.119248},
url = {https://juser.fz-juelich.de/record/891375},
}