MIXED METAL OXIDE MEMBRANE HAVING PEROVSKITE STRUCTURE, ELECTROCHEMICAL REACTOR

摘要

A solid multi-component membrane for use in an electrochemical reactor characterized by a mixed metal oxide material having a perovskite structure comprising (1) a lanthanide, Y, or a combination of a lanthanide and Y, (2) at least one alkaline earth metal, (3) Fe, and (4) Cr, Ti or a combination of Cr and Ti. Also claimed is an element for use in an electrochemical reactor or reactor cell having a first surface capable of reducing oxygen to oxygen ions, a second surface capable of reacting oxygen ions with an oxygen-consuming gas, an electron-conductive path between the first and second surfaces and an oxygen ion-conductive path between the first and second surfaces characterized in that the element comprises (A) a mixed metal oxide material having a perovskite structure and (B) a conductive coating, a catalyst, or a conductive coating comprising a catalyst. The invention permits the carrying out of a number of electrochemical reactions. IMAGE