Multilayer ceramic composite oxygen-permeable membrane and its preparation and application

The present invention relates to multilayer composite suitable for ceramic membrane reactor oxygen-permeable membrane and its preparation and use. The composite film is a porous layer having a protective effect of resistance to the reactive atmosphere and the dense layer has a high oxygen permeability of the composition. Using a method such as spraying the porous layer and the dense layers together, and finally prepare a multilayer ceramic composite oxygen-permeable membrane through certain thermal processes. In the present invention, rational design, compact structure, breaking the traditional design, effectively enhance the practicality of the oxygen permeable film membrane reactor. The reaction process applicable to the membrane, in particular a multi-coupling reaction, breaking the traditional reactor is difficult to obtain a single layer film question of balance between high oxygen permeability and good chemical stability.