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Bimetal doped mixed conductor oxygen permeation membrane, and production method and application thereof
The invention belongs to the technical filed of oxygen ion-electron mixed conductor oxygen permeation membranes, and concretely relates to a bimetal doped mixed conductor oxygen permeation membrane, and a production method and an application thereof. The oxygen permeation membrane is characterized in that two metal ions are doped to the B position in Ba0.6Sr0.4FeO3 base perovskite oxide in order to form a bimetal doped perovskite oxide. The Mg and Zr bimetal doped Ba1-xSrxFe1-y-zMgyZrzO3-delta mixed conductor oxygen permeation membrane has the characteristics of good stability and high permeation flux. Doping of Mg<2+> generates many oxygen vacancies, so the high permeation flux of the doped oxygen permeation membrane is guaranteed; and doping of Zr<4+> improves the structure tolerance factor of perovskite, so conversion of the structure of perovskite caused by increase of the concentration of the oxygen vacancies is prevented. The concentration of the oxygen vacancies and the structure stability of perovskite are improved by doping Mg and Zr ions, so the Ba1-xSrxFe1-y-zMgyZrzO3-delta oxygen permeation membrane simultaneously has high permeation flux and high stability.
Bimetal doped mixed conductor oxygen permeation membrane, and production method and application thereof
The invention belongs to the technical filed of oxygen ion-electron mixed conductor oxygen permeation membranes, and concretely relates to a bimetal doped mixed conductor oxygen permeation membrane, and a production method and an application thereof. The oxygen permeation membrane is characterized in that two metal ions are doped to the B position in Ba0.6Sr0.4FeO3 base perovskite oxide in order to form a bimetal doped perovskite oxide. The Mg and Zr bimetal doped Ba1-xSrxFe1-y-zMgyZrzO3-delta mixed conductor oxygen permeation membrane has the characteristics of good stability and high permeation flux. Doping of Mg<2+> generates many oxygen vacancies, so the high permeation flux of the doped oxygen permeation membrane is guaranteed; and doping of Zr<4+> improves the structure tolerance factor of perovskite, so conversion of the structure of perovskite caused by increase of the concentration of the oxygen vacancies is prevented. The concentration of the oxygen vacancies and the structure stability of perovskite are improved by doping Mg and Zr ions, so the Ba1-xSrxFe1-y-zMgyZrzO3-delta oxygen permeation membrane simultaneously has high permeation flux and high stability.
Bimetal doped mixed conductor oxygen permeation membrane, and production method and application thereof
JIANG HEQING (author) / HE GUANGHU (author) / LIANG WENYUAN (author) / ZHANG YAN (author) / JIAO CHENGLI (author)
2015-08-26
Patent
Electronic Resource
English
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