| PATENT CLAIMS |
Fluid sepn device capable of separating O from an O contg gaseous mixt which uses at least one solid-state membrane comprising a dense mixed conducting multi-comp metallic oxide layer formed from a mixed conducting multi-comp metallic oxide represented by the formula
- (Ln)x(A')x(A'')x(B)y(B')y(O)z-2
- Ln = f block lanthanides
- A' = Group 2
- A'' = Group 1,2 & 3 & f block lanthanides
- B,B' = d block transition metals excluding Ti & Cr
- x,x' = 0-1; y,y' = 0-1.1; x+x'+x''=1.0; y+y' = 1.0-1.1 & z is a No.
which renders the compd charge neutral
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