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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

Pirou, S, Bermudez, J, Tak Na, B, Yu, J, Vang Hendriksen, P, Kaiser, A, Ramirez Reina, Tomas, Millan, M and Kiebach, R (2018) 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 Journal of Membrane Science, 552. pp. 115-123.

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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.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Pirou, S
Bermudez, J
Tak Na, B
Yu, J
Vang Hendriksen, P
Kaiser, A
Ramirez Reina,
Millan, M
Kiebach, R
Date : 31 January 2018
DOI : 10.1016/j.memsci.2018.01.067
Copyright Disclaimer : © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Uncontrolled Keywords : Oxygen transport membrane, Dual-phase membrane, CO2 stability, SO2 tolerance, Oxy-fuel combustion
Depositing User : Melanie Hughes
Date Deposited : 29 Jan 2018 14:58
Last Modified : 31 Jan 2019 02:08

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