Friday, April 23, 2010 11:00 am – 12:00 pm
Room 610, M&M Building
Susan M. Stagg-Williams
University of Kansas
Mixed oxygen ionic-electronic conductive (O-MIEC) perovskites have gainedsignificant attention as desirable materials for catalytic reactors because of theirability to separate oxygen from air without the use of an external circuit. Themembranes have an infinite theoretical oxygen separation factor and can be usedfor staged addition of oxygen to reactors. One specific application of interest isthe production of synthesis gas (H2 and CO) via simultaneous oxygen separationand hydrocarbon conversion. However, many of the perovskite or perovskite-likemembranes being investigated suffer from low oxygen flux or mechanicalinstability. Work at the University of Kansas is focused on the production of highflux oxygen permeable membranes with the mechanical integrity to be used ashigh temperature reactors and in highly reducing environments. This seminar willoutline strategies for increasing oxygen flux through ceramic membranes andshow examples of reactor applications using these high flux membranes.