TY - JOUR
T1 - Oxygen permeation properties and the stability of La0.6Sr0.4Fe0.8Co0.2O3 studied by Raman spectroscopy
AU - Iguchi, Fumitada
AU - Sata, Noriko
AU - Yugami, Hiroo
AU - Takamura, Hitoshi
PY - 2006/10/31
Y1 - 2006/10/31
N2 - A partial oxidation test was performed using a La0.6Sr0.4Fe0.8Co0.2O3 (LSFCO6482) membrane in the surface limited conditions at a temperature range of 800-920 °C and in a syngas side atmosphere of CH4 diluted with Ar (100%, 25.6% and 1%) in order to investigate chemical stability and oxygen permeation properties. On the surface, deposited carbon was observed in the test and it was revealed to be graphite by an in-situ Raman measurement. It was combusted by oxygen fed through the membrane. Segregation of the membrane on both surfaces was observed in all specimens after the test. Moreover, significant decomposition occurred on Air side surface of the membrane which tested in a syngas side atmosphere of 25.6% and 100%. However, the significant decomposition did not affect to be oxygen permeation properties, but it did affect its mechanical strength.
AB - A partial oxidation test was performed using a La0.6Sr0.4Fe0.8Co0.2O3 (LSFCO6482) membrane in the surface limited conditions at a temperature range of 800-920 °C and in a syngas side atmosphere of CH4 diluted with Ar (100%, 25.6% and 1%) in order to investigate chemical stability and oxygen permeation properties. On the surface, deposited carbon was observed in the test and it was revealed to be graphite by an in-situ Raman measurement. It was combusted by oxygen fed through the membrane. Segregation of the membrane on both surfaces was observed in all specimens after the test. Moreover, significant decomposition occurred on Air side surface of the membrane which tested in a syngas side atmosphere of 25.6% and 100%. However, the significant decomposition did not affect to be oxygen permeation properties, but it did affect its mechanical strength.
KW - Mixed ionic electronic conductor (MIEC)
KW - Oxygen permeation properties
KW - Partial oxidation
KW - Perovskite type oxides
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U2 - 10.1016/j.ssi.2006.07.025
DO - 10.1016/j.ssi.2006.07.025
M3 - Article
AN - SCOPUS:33750338844
SN - 0167-2738
VL - 177
SP - 2281
EP - 2284
JO - Solid State Ionics
JF - Solid State Ionics
IS - 26-32 SPEC. ISS.
ER -