Details
| Original language | English |
|---|---|
| Pages (from-to) | 10386-10393 |
| Number of pages | 8 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 55 |
| Issue number | 39 |
| Early online date | 23 Sept 2016 |
| Publication status | E-pub ahead of print - 23 Sept 2016 |
Abstract
To improve the stability and oxygen permeability of Ba0.6Sr0.4FeO3-δ (BSF)-based perovskite membranes, an Mg and Zr codoping strategy is proposed. The characterization by X-ray diffraction, Mössbauer spectroscopy and oxygen permeation measurements revealed that single-element Mg doping could improve the oxygen permeability of BSF-based membranes. However, in situ XRD measurements indicated that the single-element Mg doping exhibits a poor thermal stability at low oxygen partial pressure. Single-element Zr doping could improve the structure stability of BSF-based perovskites but lead to a serious decrease of oxygen permeability. Compared with the BSF-based perovskites doped by either Mg or Zr alone, Mg and Zr codoped perovskite Ba0.6Sr0.4Fe0.8Mg0.15Zr0.05O3-δ showed a better stability than single-element Mg doping and exhibited a higher oxygen permeability than single-element Zr doping. For the Mg and Zr codoped BSF, the oxygen permeation flux reached 0.78 mL min-1 cm-2 at 950 °C under an air/He oxygen partial pressure gradient.
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In: Industrial and Engineering Chemistry Research, Vol. 55, No. 39, 23.09.2016, p. 10386-10393.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Codoping Strategy to Improve Stability and Permeability of Ba0.6Sr0.4FeO3-δ-Based Perovskite Membranes
AU - He, Guanghu
AU - Cao, Zhengwen
AU - Liang, Wenyuan
AU - Zhang, Yan
AU - Liu, Xin
AU - Caro, Jürgen
AU - Jiang, Heqing
PY - 2016/9/23
Y1 - 2016/9/23
N2 - To improve the stability and oxygen permeability of Ba0.6Sr0.4FeO3-δ (BSF)-based perovskite membranes, an Mg and Zr codoping strategy is proposed. The characterization by X-ray diffraction, Mössbauer spectroscopy and oxygen permeation measurements revealed that single-element Mg doping could improve the oxygen permeability of BSF-based membranes. However, in situ XRD measurements indicated that the single-element Mg doping exhibits a poor thermal stability at low oxygen partial pressure. Single-element Zr doping could improve the structure stability of BSF-based perovskites but lead to a serious decrease of oxygen permeability. Compared with the BSF-based perovskites doped by either Mg or Zr alone, Mg and Zr codoped perovskite Ba0.6Sr0.4Fe0.8Mg0.15Zr0.05O3-δ showed a better stability than single-element Mg doping and exhibited a higher oxygen permeability than single-element Zr doping. For the Mg and Zr codoped BSF, the oxygen permeation flux reached 0.78 mL min-1 cm-2 at 950 °C under an air/He oxygen partial pressure gradient.
AB - To improve the stability and oxygen permeability of Ba0.6Sr0.4FeO3-δ (BSF)-based perovskite membranes, an Mg and Zr codoping strategy is proposed. The characterization by X-ray diffraction, Mössbauer spectroscopy and oxygen permeation measurements revealed that single-element Mg doping could improve the oxygen permeability of BSF-based membranes. However, in situ XRD measurements indicated that the single-element Mg doping exhibits a poor thermal stability at low oxygen partial pressure. Single-element Zr doping could improve the structure stability of BSF-based perovskites but lead to a serious decrease of oxygen permeability. Compared with the BSF-based perovskites doped by either Mg or Zr alone, Mg and Zr codoped perovskite Ba0.6Sr0.4Fe0.8Mg0.15Zr0.05O3-δ showed a better stability than single-element Mg doping and exhibited a higher oxygen permeability than single-element Zr doping. For the Mg and Zr codoped BSF, the oxygen permeation flux reached 0.78 mL min-1 cm-2 at 950 °C under an air/He oxygen partial pressure gradient.
UR - http://www.scopus.com/inward/record.url?scp=84989878244&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.6b02134
DO - 10.1021/acs.iecr.6b02134
M3 - Article
AN - SCOPUS:84989878244
VL - 55
SP - 10386
EP - 10393
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
SN - 0888-5885
IS - 39
ER -