Details
| Original language | English |
|---|---|
| Pages (from-to) | 357-364 |
| Number of pages | 8 |
| Journal | Journal of membrane science |
| Volume | 497 |
| Early online date | 15 Sept 2015 |
| Publication status | Published - 1 Jan 2016 |
Abstract
The Ruddlesden-Popper type oxide (Pr0.9La0.1)2.0Ni0.74Cu0.21Ga0.05O4+δ ((PL)2.0NCG) is important for oxygen separating membranes and intermediate temperature solid-oxide fuel cell (SOFC) cathodes if the high chemical stability of CO2 is required. This oxide exhibits good phase stability in the air at high temperatures, whereas at intermediate temperatures it demonstrates a reversible decomposition into Pr4Ni3O10+δ' (a higher member of the Ruddlesden-Popper series) and praseodymium oxide phases, which are barriers to the oxygen transport. The phase decomposition conditions of (PL)2.0NCG, as a function of temperature and oxygen pressure, have been examined. The defined phase stability window of temperature and oxygen partial pressure for (PL)2.0NCG can be the instruction for practical applications. The influence of calcination temperature and A-site deficiency on the material's phase stability are discussed to guide the development of Ruddlesden-Popper type materials with improved stability.
Keywords
- Oxidizing environment, Oxygen flux, Phase stability, Ruddlesden-Popper
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Materials Science(all)
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
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In: Journal of membrane science, Vol. 497, 01.01.2016, p. 357-364.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The phase stability of the Ruddlesden-Popper type oxide (Pr0.9La0.1)2.0Ni0.74Cu0.21Ga0.05O4+δ in an oxidizing environment
AU - Xue, Jian
AU - Schulz, Alexander
AU - Wang, Haihui
AU - Feldhoff, Armin
N1 - Funding Information: J.X. acknowledges financial support from the China Scholarship Council (CSC) (File No. 201306150011 ), National Science Fund for Distinguished Young Scholars of China (No. 21225625 ) and the Australian Research Council (ARC) through the Future Fellow Program ( FT140100757 ). Financial support by the Deutsche Forschungsgemeinschaft (DFG) (No. FE928/7-1 ) is appreciated. The authors also acknowledge O. Ravkina and F. Steinbach for technical support.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - The Ruddlesden-Popper type oxide (Pr0.9La0.1)2.0Ni0.74Cu0.21Ga0.05O4+δ ((PL)2.0NCG) is important for oxygen separating membranes and intermediate temperature solid-oxide fuel cell (SOFC) cathodes if the high chemical stability of CO2 is required. This oxide exhibits good phase stability in the air at high temperatures, whereas at intermediate temperatures it demonstrates a reversible decomposition into Pr4Ni3O10+δ' (a higher member of the Ruddlesden-Popper series) and praseodymium oxide phases, which are barriers to the oxygen transport. The phase decomposition conditions of (PL)2.0NCG, as a function of temperature and oxygen pressure, have been examined. The defined phase stability window of temperature and oxygen partial pressure for (PL)2.0NCG can be the instruction for practical applications. The influence of calcination temperature and A-site deficiency on the material's phase stability are discussed to guide the development of Ruddlesden-Popper type materials with improved stability.
AB - The Ruddlesden-Popper type oxide (Pr0.9La0.1)2.0Ni0.74Cu0.21Ga0.05O4+δ ((PL)2.0NCG) is important for oxygen separating membranes and intermediate temperature solid-oxide fuel cell (SOFC) cathodes if the high chemical stability of CO2 is required. This oxide exhibits good phase stability in the air at high temperatures, whereas at intermediate temperatures it demonstrates a reversible decomposition into Pr4Ni3O10+δ' (a higher member of the Ruddlesden-Popper series) and praseodymium oxide phases, which are barriers to the oxygen transport. The phase decomposition conditions of (PL)2.0NCG, as a function of temperature and oxygen pressure, have been examined. The defined phase stability window of temperature and oxygen partial pressure for (PL)2.0NCG can be the instruction for practical applications. The influence of calcination temperature and A-site deficiency on the material's phase stability are discussed to guide the development of Ruddlesden-Popper type materials with improved stability.
KW - Oxidizing environment
KW - Oxygen flux
KW - Phase stability
KW - Ruddlesden-Popper
UR - http://www.scopus.com/inward/record.url?scp=84943545947&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2015.09.026
DO - 10.1016/j.memsci.2015.09.026
M3 - Article
AN - SCOPUS:84943545947
VL - 497
SP - 357
EP - 364
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
ER -