Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7020037 | Journal of Membrane Science | 2018 | 29 Pages |
Abstract
Self-standing, planar dual-phase oxygen transport membranes consisting of 70â¯vol% (ZrO2).89(Y2O3).01(Sc2O3).10 (10Sc1YSZ) and 30â¯vol% LaCr.85Cu.10Ni.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 1000â¯Âµm thick and 110â¯Âµm thick self-supported 10Sc1YSZ-LCCN (70-30â¯vol%) membranes from 700â¯Â°C to 950â¯Â°C using air as the feed gas and N2 or CO2 as the sweep gas. The 110â¯Âµm thick membrane, prepared by tape-casting and lamination processes, showed oxygen fluxes up to 1.02â¯mLN cmâ2 minâ1 (950â¯Â°C, air/N2). Both membranes demonstrated stable performances over long-term stability tests (250-300â¯h) performed at 850â¯Â°C using pure CO2 as the sweep gas.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Stéven Pirou, Jose M. Bermudez, Beom Tak Na, Simona Ovtar, Ji Haeng Yu, Peter Vang Hendriksen, Andreas Kaiser, Tomás Ramirez Reina, Marcos Millan, Ragnar Kiebach,