Inventors:
Uthamalingam Balachandran - Hinsdale IL
Mark S. Kleefisch - Naperville IL
Thaddeus P. Kobylinski - Lisle IL
Sherry L. Morissette - Las Cruces NM
Shiyou Pei - Naperville IL
Assignee:
Amoco Corporation - Chicago IL
International Classification:
H01B 106
C01G 3714
Abstract:
Preparation, structure, and properties of mixed metal oxide compositions containing at least strontium, cobalt, iron and oxygen are described. The crystalline mixed metal oxide compositions of this invention have, for example, structure represented by Sr. sub. alpha. (Fe. sub. 1-x Co. sub. x). sub. alpha. +. beta. O. sub. delta. where x is a number in a range from 0. 01 to about 1,. alpha. is a number in a range from about 1 to about 4,. beta. is a number in a range upward from 0 to about 20, and. delta. is a number which renders the compound charge neutral, and wherein the composition has a non-perovskite structure. Use of the mixed metal oxides in dense ceramic membranes which exhibit oxygen ionic conductivity and selective oxygen separation, are described as well as their use in separation of oxygen from an oxygen-containing gaseous mixture.