TY - GEN
T1 - Mixed conductivity and oxygen permeability of (BaxSr 1-x) 0.98Fe1-yMyO 3-δ(x = 0.1-0.3, y = 0.1-0.4 and M = Ga, Al)
AU - Yong, Kang Chun
AU - Kusaba, Hajime
AU - Einaga, Hisahiro
AU - Teraoka, Yasutake
PY - 2007
Y1 - 2007
N2 - Substitution effects of Ga and Al for Fe in (BaxSr 1-x)0.98FeO3-δ were studied with respect to crystal structure, conductivity and oxygen permeability. The solubility limits of Ga and Al in (BaxSr1-x)0.98Fe 1-yMyO3-δ (M=Ga, Al) were between 20 and 30 mol%. The substitution of Ga and Al caused decreases in electronic and oxide ionic conductivities (mixed conductivities) but tolerance toward enhanced the tolerance reduction. Sintered membranes of the Ga- and Al-substituted oxides showed oxygen permeability under the He/air oxygen partial pressure gradient and were stable under the condition of methane partial oxidation at 900°C.
AB - Substitution effects of Ga and Al for Fe in (BaxSr 1-x)0.98FeO3-δ were studied with respect to crystal structure, conductivity and oxygen permeability. The solubility limits of Ga and Al in (BaxSr1-x)0.98Fe 1-yMyO3-δ (M=Ga, Al) were between 20 and 30 mol%. The substitution of Ga and Al caused decreases in electronic and oxide ionic conductivities (mixed conductivities) but tolerance toward enhanced the tolerance reduction. Sintered membranes of the Ga- and Al-substituted oxides showed oxygen permeability under the He/air oxygen partial pressure gradient and were stable under the condition of methane partial oxidation at 900°C.
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M3 - Conference contribution
AN - SCOPUS:34250803179
SN - 1558999299
SN - 9781558999299
T3 - Materials Research Society Symposium Proceedings
SP - 111
EP - 116
BT - Solid-State Ionics-2006
T2 - 2006 MRS Fall Meeting
Y2 - 27 November 2006 through 1 December 2006
ER -