Abstract
A 30 μm thin-film tubular CGO (Ce0.9Gd0.1O1.95−δ) membrane with catalytic layers on both sides has been prepared by dip-coating on a low cost, porous magnesium oxide (MgO) support. The MgO support was fabricated through a thermoplastic extrusion process. Support, thin membrane and catalytic layers were sintered in individual steps at temperatures between 1250 and 1300 °C to achieve a controlled removal of binder and organic additives and to obtain the desired, defect free microstructure. The prepared asymmetric tubular CGO membrane has been tested at elevated temperatures (up to 900 °C) using atmospheric air and N2, H2 for the feed and sweep side respectively. The oxygen permeation was 4 N ml min−1 cm−2 at 850 °C using H2 on one side and air on the other side.
Original language | English |
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Journal | Separation and Purification Technology |
Volume | 147 |
Pages (from-to) | 422–430 |
ISSN | 1383-5866 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- Asymmetric membrane
- Dip-coating
- MgO support
- CGO membrane
- Oxygen flux