TY  - JOUR
AU  - Kaiser, A.
AU  - Foghmoes, S.
AU  - Pecanac, G.
AU  - Malzbender, Jürgen
AU  - Chatzichristodoulou, C.
AU  - Glasscock, J. A.
AU  - Ramachandran, D.
AU  - Ni, D. W.
AU  - Esposito, V.
AU  - Sogaard, M.
AU  - Hendriksen, P. V.
TI  - Design and Optimisation of Porous Supports for Asymmetric Ceria-Based Oxygen Transport Membranes
JO  - Journal of membrane science
VL  - 513
SN  - 0376-7388
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2016-03352
SP  - 85-94
PY  - 2016
AB  - The microstructure, mechanical properties and gas permeability of porous supports of Ce0.9Gd0.1O1.95−δ (CGO) were investigated as a function of sintering temperature and volume fraction of pore former for use in planar asymmetric oxygen transport membranes (OTMs). With increasing the pore former content from 11 vol% to 16 vol%, the gas permeabilities increased by a factor of 5 when support tapes were sintered to comparable densities. The improved permeabilities were due to a more favourable microstructure with larger interconnected pores at a porosity of 45% and a fracture strength of 47±2 MPa (m=7). The achieved gas permeability of 2.25×10−15 m2 for a 0.4 mm thick support will not limit the gas transport for oxygen production but in partial oxidation of methane to syngas at higher oxygen fluxes. For integration of the CGO support layer into a flat, asymmetric CGO membrane, the sintering activity of the CGO membrane was reduced by Fe2O3 addition (replacing Co3O4 as sintering additive).
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000376301400010
DO  - DOI:10.1016/j.memsci.2016.04.016
UR  - https://juser.fz-juelich.de/record/810763
ER  -