Journal article
Performance and stability of (ZrO2)0.89(Y2O3)0.01(Sc2O3)0.10-LaCr0.85Cu0.10Ni0.05O3-δ oxygen transport membranes under conditions relevant for oxy-fuel combustion
Department of Energy Conversion and Storage, Technical University of Denmark1
Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark2
Imperial College London3
Korea Institute of Energy Research4
Ceramic Engineering & Science, Department of Energy Conversion and Storage, Technical University of Denmark5
Self-standing, planar dual-phase oxygen transport membranes consisting of 70 vol.% (ZrO2)0.89(Y2O3)0.01(Sc2O3)0.10 (10Sc1YSZ) and 30 vol.% LaCr0.85Cu0.10Ni0.05O3-δ (LCCN) were successfully developed and tested. The stability of the composite membrane was studied in simulated oxy-fuel power plant flue-gas conditions (CO2, SO2, H2O).
The analyses of the exposed composites by X-ray diffraction (XRD), X-ray fluorescence (XRF), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and Raman spectroscopy revealed an excellent stability. Oxygen permeation fluxes were measured across 1000 μm thick and 110 μm thick self-supported 10Sc1YSZ-LCCN (70-30 vol.%) membranes from 700 °C to 950 °C using air as the feed gas and N2 or CO2 as the sweep gas.
The 110 μm thick membrane, prepared by tape-casting and lamination processes, showed oxygen fluxes up to 1.02 mLN cm-2 min-1 (950 °C, air/N2). Both membranes demonstrated stable performances over long-term stability tests (250-300 h) performed at 850 °C using pure CO2 as the sweep gas.
| Language: | English |
|---|---|
| Publisher: | Elsevier BV |
| Year: | 2018 |
| Pages: | 115-123 |
| ISSN: | 18733123 and 03767388 |
| Types: | Journal article |
| DOI: | 10.1016/j.memsci.2018.01.067 |
| ORCIDs: | Pirou, Stéven , Ovtar, Simona , Hendriksen, Peter Vang , Kaiser, Andreas and Kiebach, Ragnar |
