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US 8,980,213 B2Granted
Ceramic materials for gas separation and oxygen storage
AssigneeBoard of Trustees of Northern Illinois University
InventorsBogdan Dabrowski, Steven Remsen
Life of this patent
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Abstract
A manganese oxide contains M1, optionally M2, Mn and O. M1 is selected from the group consisting of In, Sc, Y, Dy, Ho, Er, Tm, Yb and Lu. M2 is different from M1, and M2 is selected from the group consisting of Bi, In, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. These ceramic materials are hexagonal in structure, and provide superior materials for gas separation and oxygen storage.
Claims21
A manganese oxide, comprising M1, optionally M2, Mn and O , wherein:
- M1 is Y,
- M2 is different from M1, and M2 is selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb and Dy,
- Mn and O are present in an atomic ratio of 1:z, and z is at least 3.15 and
- the Mn has a formal oxidation state between 3 and 4.
1 more element
A manganese oxide, comprising M1, M2, Mn and O , wherein:
- M1 is,
- M2 is different from M1, and M2 is selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb and Dy,
- M1 and M2 are present in an atomic ratio of x:1−x, and x=0.1 to 0.9, and
- Mn and O are present in an atomic ratio of 1:z, and z>3.
1 more element
Dependencies are inferred from the claim text.