An ion transport membrane assembly comprising a pressure vessel, a plurality of planar ion transport membrane modules having ceramic conduits, one or more gas manifolds having metal conduits, and multi-layer seals connecting the ceramic conduits to the metal conduits. The multi-layer seals comprise two or more compliant gasket layers and one or more shear gasket layers.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made at least in part with funding from the United States Department of Energy under DOE Cooperative Agreement No. DE-FC26-98FT40343. The United States Government has certain rights in this invention.