FUEL 184 |
| Abstract The objective of this work is to fabricate a tubular membrane reactor that could be used at high temperatures (above 550 oC) for hydrogen (H2) separation and purification. The tubular reactor is a mixed ionic-electronic conductive system with a doped perovskite structure (A2+B4+O3-doped with a trivalent cation). The reactor consists of a porous SrCeO3-NiO/or carbon black composite support and a dense thin film membrane of SrCe0.95Y0.05O3-α. The support and membrane powders were synthesized by the solid state reaction method. The support material, composed of the ceramic powder, polyvinyl alcohol (as binder), glycerin (as plasticizer), and water (as solvent), was formulated into homogeneously dispersed slurry with uniform structure. The tape-casting technique was used to produce a thin film support by shearing action of a doctor blade on ceramic slurry. After drying, the tape was cut and rolled on a rod producing a tubular geometry. Slow sintering and H2 atmosphere exposure burned off the organic materials, producing a porous ceramic composite tube. |
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Fuel Processing for Hydrogen Production
8:25 AM-12:05 PM, Wednesday, August 22, 2007 Boston Park Plaza -- Berkeley Rm, Oral
Division of Fuel Chemistry |