A Cobalt-Free Oxygen-Permeable Membrane Based on the Perovskite-Type Oxide Ba0.5Sr0.5Zn0.2Fe0.8O3-δ

2005 ◽  
Vol 17 (14) ◽  
pp. 1785-1788 ◽  
Author(s):  
H. Wang ◽  
C. Tablet ◽  
A. Feldhoff ◽  
J. Caro
Keyword(s):  
Free Oxygen ◽  
Permeable Membrane ◽  
Perovskite Type Oxide ◽  
Oxygen Permeable Membrane ◽  
Perovskite Type

A Cobalt-Free Oxygen-Permeable Membrane Based on the Perovskite-Type Oxide Ba0.5Sr0.5Zn0.2Fe0.8O3-δ.

ChemInform ◽  
2005 ◽  
Vol 36 (42) ◽  
Author(s):  
Haihui Wang ◽  
Cristina Tablet ◽  
Armin Feldhoff ◽  
Juergen Caro
Keyword(s):  
Free Oxygen ◽  
Permeable Membrane ◽  
Perovskite Type Oxide ◽  
Oxygen Permeable Membrane ◽  
Perovskite Type

A novel cobalt-free CO2-stable perovskite-type oxygen permeable membrane

2019 ◽  
Vol 573 ◽  
pp. 504-510 ◽  
Author(s):  
Zhongtao Wang ◽  
Wei Liu ◽  
Yusen Wu ◽  
Wenping Sun ◽  
Wei Liu ◽  
...  
Keyword(s):  
Permeable Membrane ◽  
Oxygen Permeable Membrane ◽  
Perovskite Type

Novel cobalt-free oxygen permeable membrane

2004 ◽  
pp. 1130 ◽  
Author(s):  
Xuefeng Zhu ◽  
Haihui Wang ◽  
Weishen Yang
Keyword(s):  
Free Oxygen ◽  
Permeable Membrane ◽  
Oxygen Permeable Membrane

First-principles Studies of Phase Stability and the Neutral Atomic Vacancies in LiNbO3, NaNbO3 and KNbO3

2005 ◽  
Vol 902 ◽  
Author(s):  
Akio Shigemi ◽  
Takahiro Wada
Keyword(s):  
Enthalpy Of Formation ◽  
Density Functional ◽  
Formation Energy ◽  
Type Structure ◽  
Enthalpies Of Formation ◽  
Functional Formalism ◽  
Reducing Atmosphere ◽  
Perovskite Type Oxide ◽  
Formation Energies ◽  
Perovskite Type

AbstractWe overall evaluated the enthalpies of formation and the formation energies of neutral vacancies in ANbO3 (A = Li, Na, K) using a plane-wave pseudopotential method within a density functional formalism. The LiNbO3 phase with the LiNbO3-type structure was confirmed to have lower enthalpy of formation than that with perovskite- or ilmenite-type structure. The NaNbO3 (R3c) and KNbO3 (Bmm2 and R3m) phases with the lowest symmetry were found to have the lowest enthalpy of formation. The formation energy of a A vacancy was found to be the lowest under an oxidizing atmosphere and that of an O vacancy was found to be the lowest under a reducing atmosphere. The formation energy of a Nb vacancy was the highest under both oxygen-rich and -poor conditions. These results are in agreement with the empirical rule that B site defects in perovskite-type oxide do not exist.

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