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−xRExO2−δ (RE = Pr and Sm) and spinel-type ferrites of MFe2O4 (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 sccm). The methane conversion and CO selectivity were 22 and 93%, respectively. Laminated membranes comprising of Ce0.9Sm0.1O2−δ - 15 vol% MnFe2O4 and Ce0.9Sm0.1O2−δ - 30 vol% CoFe2O4 were also prepared. The laminated membrane with one Ce0.9Sm0.1O2−δ - 30 vol% CoFe2O4 layer showed a higher oxygen flux density by a factor of 40% than that without Ce0.9Sm0.1O2−δ - 30 vol% CoFe2O4 layer.
- Nanotechnology Institute
Oxygen Permeation and Methane Conversion Properties of CERIA-Based Composite Membranes Prepared by Tape-Casting Technique
- Views Icon Views
- Share Icon Share
- Search Site
Takamura, H, Kobayashi, T, Kamegawa, A, & Okada, M. "Oxygen Permeation and Methane Conversion Properties of CERIA-Based Composite Membranes Prepared by Tape-Casting Technique." Proceedings of the ASME 2004 2nd International Conference on Fuel Cell Science, Engineering and Technology. 2nd International Conference on Fuel Cell Science, Engineering and Technology. Rochester, New York, USA. June 14–16, 2004. pp. 213-217. ASME. https://doi.org/10.1115/FUELCELL2004-2473
Download citation file: