NaA molecular sieve membrane element internal membrane preparation method
A molecular sieve and membrane element technology, applied in the field of molecular sieve membrane preparation, can solve the problems of uneven coating and batch difference of molecular sieve membrane, and achieve the effects of high permeation flux, simple method and excellent performance
Active Publication Date: 2013-04-24
JIANGSU NINE HEAVEN HIGH TECH
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The invention relates to an NaA molecular sieve internal membrane preparation method and belongs to the technical field of molecular sieve membrane preparation. The method comprises the following steps: 1, uniformly dispersing NaA molecular sieve seeds in deionized water to obtain an NaA molecular sieve seed suspension, conveying the NaA molecular sieve seed suspension to the inner chamber of a support body through a conveying device, allowing the seed suspension to flow on the surface of the inner chamber in a circulation manner, discharging the seed suspension after the circulation ending, and drying the support body to obtain a seeded support body for later use; and 2, placing the seeded support body obtained in step 1 in an NaA molecular sieve membrane preparation liquid, heating for carrying out hydrothermal synthesis to begin a crystallization reaction, taking out after reaction ending, cooling, taking out a molecular sieve membrane tube, washing with deionized water, and drying to obtain an NaA molecular sieve internal membrane. The method solves the non-uniform coating problem during the preparation of the NaA molecular sieve internal membrane, is simple and is easy to implement. The NaA molecular sieve membrane synthesized through utilizing the method has high repeatability and excellent performances.
Application Domain
Semi-permeable membranesAluminosilicate zeolite type-A
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