Patent ID: 6146549
Filing Date: 2000-11-14
Classification: B01D,B01J,C01B,C01C,C04B,Y02P

Abstract:
A gas impermeable ceramic catalytic membrane comprising a mixed ionic and electronic conducting phase having the formula:Ln.sub.x Sr.sub.2-x-y Ca.sub.y B.sub.z M.sub.2-z O.sub.5+.delta.where Ln is an element selected from the fblock lanthanide elements and yttrium or mixtures thereof; B is an element selected from Al, Ga, In or mixtures thereof; M is a d-block transition element or mixtures thereof, 0.01.ltoreq.x.ltoreq.1.0; 0.01.ltoreq.y.ltoreq.0.7, 0.01.ltoreq.z.ltoreq.1.0 and .delta. is a number that varies to maintain charge neutrality.