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@ARTICLE{He:861952,
author = {He, Guanghu and Baumann, Stefan and Liang, Fangyi and
Hartmann, Heinrich and Jiang, Heqing and Meulenberg, Wilhelm
Albert},
title = {{P}hase stability and oxygen permeability of {F}e-based
{B}a{F}e0.9{M}g0.05{X}0.05{O}3 ({X} = {Z}r, {C}e, {C}a)
membranes for air separation},
journal = {Separation and purification technology},
volume = {220},
issn = {1383-5866},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2019-02358},
pages = {176 - 182},
year = {2019},
abstract = {The effects of various dopants including Zr4+, Ce4+ and
Ca2+ on the structure and oxygen permeability of B-site
doped BaFe0.9Mg0.05X0.05O3−δ (BFM-X) perovskite-type
oxygen transport membranes were studied. Slight X cation
doping could stabilize the cubic structure of BFM-X
perovskite down to room temperature. XRD, SEM and
thermogravimetric results revealed that all the cubic BFM-X
oxides exhibited good phase stability under argon atmosphere
without any phase changes. The weight loss of BFM-Ce from TG
analysis suggests the reduction of cerium ions at high
temperatures, which may account for its larger electrical
conductivity and higher oxygen permeability comparing to
BFM-Zr and BFM-Ca membranes. X-ray photoelectron
spectroscopy (XPS) data revealed that Ca dopant with larger
size caused the mismatch with Fe ions and led to the
substitution of Ca ions at both Fe and Ba site in BFM-Ca
oxide, being detrimental to electrical conductivity and
oxygen permeation. Among these membranes, BFM-Ce has the
highest oxygen permeability and good long term permeation
stability under air/argon gradient, thus it was recommended
as a potential and promising material for air separation.},
cin = {IEK-1 / ZEA-3},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)ZEA-3-20090406},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000466250100019},
doi = {10.1016/j.seppur.2019.03.058},
url = {https://juser.fz-juelich.de/record/861952},
}