Details
| Original language | English |
|---|---|
| Pages (from-to) | 7820-7826 |
| Number of pages | 7 |
| Journal | Chemistry of Materials |
| Volume | 27 |
| Issue number | 22 |
| Early online date | 5 Nov 2015 |
| Publication status | Published - 24 Nov 2015 |
Abstract
Most of the alkaline earth-containing perovskite-based oxygen-transporting membranes (OTMs) have insufficient tolerance toward CO2 that potentially limits their commercial applications, for example, oxy-fuel combustion processes with CO2 capture. One concern regarding the chemical potential of oxygen that may influence the CO2 tolerance of perovskites, however, is lacking effective investigations. In the present work, we demonstrate that the approach to increase the chemical potential of oxygen at the feed side contributes to stabilize the oxygen permeation fluxes of the fluorite-perovskite dual-phase OTM under CO2-rich atmosphere, and we further verify that oxygen can effectively act as a "buffer" to prevent the carbonate formation. Remarkably, we achieve high and stable oxygen permeation fluxes over 0.84 mL cm-2 min-1 during long-term operation at 900 °C with a 0.5 mm thickness 80 wt % Ce0.8Gd0.15Cu0.05O2-δ-20 wt % SrFeO3-δ (CGCO-SFO, nominal composition) dual-phase membrane using oxygen-enriched air as the feed gas and pure CO2 as the sweep gas.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Materials Science(all)
- Materials Chemistry
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In: Chemistry of Materials, Vol. 27, No. 22, 24.11.2015, p. 7820-7826.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - An Approach To Enhance the CO2 Tolerance of Fluorite-Perovskite Dual-Phase Oxygen-Transporting Membrane
AU - Fang, Wei
AU - Steinbach, Frank
AU - Chen, Chusheng
AU - Feldhoff, Armin
N1 - Publisher Copyright: © 2015 American Chemical Society.
PY - 2015/11/24
Y1 - 2015/11/24
N2 - Most of the alkaline earth-containing perovskite-based oxygen-transporting membranes (OTMs) have insufficient tolerance toward CO2 that potentially limits their commercial applications, for example, oxy-fuel combustion processes with CO2 capture. One concern regarding the chemical potential of oxygen that may influence the CO2 tolerance of perovskites, however, is lacking effective investigations. In the present work, we demonstrate that the approach to increase the chemical potential of oxygen at the feed side contributes to stabilize the oxygen permeation fluxes of the fluorite-perovskite dual-phase OTM under CO2-rich atmosphere, and we further verify that oxygen can effectively act as a "buffer" to prevent the carbonate formation. Remarkably, we achieve high and stable oxygen permeation fluxes over 0.84 mL cm-2 min-1 during long-term operation at 900 °C with a 0.5 mm thickness 80 wt % Ce0.8Gd0.15Cu0.05O2-δ-20 wt % SrFeO3-δ (CGCO-SFO, nominal composition) dual-phase membrane using oxygen-enriched air as the feed gas and pure CO2 as the sweep gas.
AB - Most of the alkaline earth-containing perovskite-based oxygen-transporting membranes (OTMs) have insufficient tolerance toward CO2 that potentially limits their commercial applications, for example, oxy-fuel combustion processes with CO2 capture. One concern regarding the chemical potential of oxygen that may influence the CO2 tolerance of perovskites, however, is lacking effective investigations. In the present work, we demonstrate that the approach to increase the chemical potential of oxygen at the feed side contributes to stabilize the oxygen permeation fluxes of the fluorite-perovskite dual-phase OTM under CO2-rich atmosphere, and we further verify that oxygen can effectively act as a "buffer" to prevent the carbonate formation. Remarkably, we achieve high and stable oxygen permeation fluxes over 0.84 mL cm-2 min-1 during long-term operation at 900 °C with a 0.5 mm thickness 80 wt % Ce0.8Gd0.15Cu0.05O2-δ-20 wt % SrFeO3-δ (CGCO-SFO, nominal composition) dual-phase membrane using oxygen-enriched air as the feed gas and pure CO2 as the sweep gas.
UR - http://www.scopus.com/inward/record.url?scp=84947998865&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b03823
DO - 10.1021/acs.chemmater.5b03823
M3 - Article
AN - SCOPUS:84947998865
VL - 27
SP - 7820
EP - 7826
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 22
ER -