TY - GEN
T1 - Oxygen permeation and methane conversion properties of ceria-based composite membranes prepared by tape-casting technique
AU - Takamura, H.
AU - Kobayashi, T.
AU - Kamegawa, Atsunori
AU - Okada, M.
PY - 2004/9/14
Y1 - 2004/9/14
N2 - The preparation of ceria-based composite membranes by means of tape-casting technique and their oxygen permeation and methane reforming properties have been investigated. Oxide powders comprising of Ce1-xRE xO2-δ (RE = Pr and Sm) and spinel-type ferrites of MFe 2O4 (M = Mn and Co) were prepared by the citrate-based liquid-mix technique. As a result of the optimization of ceramics slurry composition, a crack-free dense membrane with dimensions of 5 cm × 5 cm and 140 μm in thickness was successfully prepared by means of doctor-blade technique. For Ce0.9Sm0.1O2-δ - 15 vol% MnFe2O4 membrane with a thickness of 133 μm, an oxygen flux density of 9.5 μmol/cm2 s was attained at 1000°C under Ar-10%CH4 (100 seem). The methane conversion and CO selectivity were 22 and 93 %, respectively. Laminated membranes comprising of Ce 0.9Sm0.1A2-δ - 15 vol% MnFe 2O4 and Ce0.9Sm0.1O 2.δ -30 vol% CoFe2O4 were also prepared. The laminated membrane with one Ce0.9Sm0.1O 2.δ - 30 vol% CoFe2O4 layer showed a higher oxygen flux density by a factor of 40 % than that without Ce 0.9Sm0.1O2.δ - 30 vol% CoFe 2O4 layer.
AB - The preparation of ceria-based composite membranes by means of tape-casting technique and their oxygen permeation and methane reforming properties have been investigated. Oxide powders comprising of Ce1-xRE xO2-δ (RE = Pr and Sm) and spinel-type ferrites of MFe 2O4 (M = Mn and Co) were prepared by the citrate-based liquid-mix technique. As a result of the optimization of ceramics slurry composition, a crack-free dense membrane with dimensions of 5 cm × 5 cm and 140 μm in thickness was successfully prepared by means of doctor-blade technique. For Ce0.9Sm0.1O2-δ - 15 vol% MnFe2O4 membrane with a thickness of 133 μm, an oxygen flux density of 9.5 μmol/cm2 s was attained at 1000°C under Ar-10%CH4 (100 seem). The methane conversion and CO selectivity were 22 and 93 %, respectively. Laminated membranes comprising of Ce 0.9Sm0.1A2-δ - 15 vol% MnFe 2O4 and Ce0.9Sm0.1O 2.δ -30 vol% CoFe2O4 were also prepared. The laminated membrane with one Ce0.9Sm0.1O 2.δ - 30 vol% CoFe2O4 layer showed a higher oxygen flux density by a factor of 40 % than that without Ce 0.9Sm0.1O2.δ - 30 vol% CoFe 2O4 layer.
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M3 - Conference contribution
AN - SCOPUS:4444372607
SN - 0791841650
SN - 9780791841655
T3 - Fuel Cell Science, Engineering and Technology - 2004
SP - 213
EP - 217
BT - Fuel Cell Science, Engineering and Technology - 2004
A2 - Shah, R.K.
A2 - Kandlikar, S.G.
T2 - Second International Conference on Fuel Cell Science, Engineering and Technology
Y2 - 14 June 2004 through 16 June 2004
ER -