Double-site yttria-doped Sr1−xYxCo1−yYyO3−δ perovskite oxides as oxygen semi-permeable membranes
Article
Article Title | Double-site yttria-doped Sr1−xYxCo1−yYyO3−δ perovskite oxides as oxygen semi-permeable membranes |
---|---|
ERA Journal ID | 1448 |
Article Category | Article |
Authors | Zhang, Kun (Author), Ran, Ran (Author), Ge, Lei (Author), Shao, Zongping (Author), Jin, Wanqin (Author) and Xu, Nanping (Author) |
Journal Title | Journal of Alloys and Compounds |
Journal Citation | 474 (1), pp. 477-483 |
Number of Pages | 7 |
Year | 2009 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0925-8388 |
1873-4669 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jallcom.2008.06.120 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S092583880801089X?via%3Dihub |
Abstract | New mixed conducting oxides with the composition of Sr1-xYxCo1-yYyO3-δ (x = 0.0-0.8, y = 0.0-0.1) were exploited and synthesized. The resulted materials were investigated by X-ray diffraction, four-probe dc conductivity, temperature-programmed desorption characterization, and oxygen permeability measurement. As compared with the oxides with only one-site (A or B) being Y3+-doped, i.e., Sr1-xYxCoO3-δ and SrCo1-yYyO3-δ, the double-site Y3+-doped ones show improved phase stability, higher electrical conductivity under reduced atmosphere, and higher oxygen permeability and stability. Particularly, Sr0.95Y0.05Co0.95Y0.05O3-δ oxide demonstrates stable cubic perovskite phase in air, oxygen and nitrogen, high electrical conductivity of ∼110 S cm-1 in air and ∼50 S cm-1 in nitrogen, and a maximum permeation flux of 1.35 × 10-6 mol cm-2 s-1 at 900 °C under an air/helium gradient. Long-term permeation study at 850 °C indicates that Sr0.95Y0.05Co0.95Y0.05O3-δ can operate stably as oxygen semi-permeable membrane. |
Keywords | perovskite, mixed conductivity, membrane, oxygen permeation |
ANZSRC Field of Research 2020 | 340210. Solid state chemistry |
400409. Separation technologies | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing University of Technology, China |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5410/double-site-yttria-doped-sr1-xyxco1-yyyo3-perovskite-oxides-as-oxygen-semi-permeable-membranes
172
total views8
total downloads1
views this month0
downloads this month