Control of kinetic decomposition in mixed conducting ion transport membranes

摘要

Mixed conducting ion transport membrane comprising a multi-component metallic oxide compound represented by the formula Ln x A' x ,A" x "B y B' y Q 3-z wherein (a) Ln is an element selected from the f block lanthanides, A' is selected from Group 2, A" is selected from Groups 1, 2 and 3 and the f block lanthanides, and B and B' are independently selected from the d block transition metals, excluding titanium and chromium, wherein 0‰¤x<1, 0y+y'‰¥1.0 and z is a number which renders the compound charge neutral, and (b) the average grain size of the multicomponent metallic oxide is in the range of about 4 µm to about 20 µm.