| abstract |
The invention relates to a mixed mechanism membrane and a preparation method thereof, belonging to the technical field of gas separation membranes. The technical problem to be solved by the present invention is how to provide a uniform, continuous, long-term, high gas flux, high selectivity, good gas separation and excellent chemical stability of the mixed mechanism membrane and its preparation method. The mixed mechanism membrane of the present invention is based on a porous silica film, and a mixture of soluble inherent microporous polymers and metal-organic framework materials with a mass ratio of (90-70):(10-30) is the surface; its preparation process is The soluble intrinsic microporous polymer is mixed with the metal-organic framework material, and evenly coated on the surface of the porous silica film. The mixed mechanism membrane is uniform and continuous, has long-term effect, high gas flux, high gas selectivity, good gas separation properties, excellent chemical stability, simple preparation method, low cost, and is beneficial to industrialization. |