Ceramic manufacture for a composite ion transport membrane
A method of producing a green form for use in manufacturing a composite, ceramic ion transport membrane is provided in which first and second ceramic powder mixtures are used to produce first and second layers of the green form. The first and second ceramic powder mixtures have ceramic particles and a pore former. After formation of each of the first and second layers or after formation of the second layer, heat is applied to burn out the binder and form pores. This heating is completed prior to application of a dense layer to prevent production of defects within the dense layer. The dense layer contains an ion transport material. Defects are also prevented by grading particle size from the first layer to the dense layer. This allows the second intermediate layer to fill in larger pores of the first layer and to present a smooth surface to the dense layer. Additionally, the second ceramic powder mixture contains in part material used in forming the dense layer for thermal expansion compatibility purposes.
Praxair Technology Inc.
C C C C C C C C C H H Y H C C C C Y C
C04B C04B C04B C04B C04B C04B C04B C04B C04B H01M H01M Y02E H01M C04B C04B C04B C04B Y02P C04B
additional inventional additional inventional inventional additional additional additional additional additional additional additional inventional additional additional additional additional additional additional
Weitung Hancun Jack C.
Wang Chen Chen