NaA type molecular sieve membrane synthesized on surface of organic hollow fiber, and production method thereof

A fiber surface and molecular sieve technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of poor combination of organic materials and inorganic materials, large performance differences, and low cost , excellent performance and easy operation
CN104841289AActive Publication Date: 2015-08-19DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2015-08-19

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Abstract

The invention discloses a method for synthesizing a NaA type molecular sieve membrane on the surface of an organic hollow fiber. The method comprises the following steps: synthesizing 800nm NaA type molecular sieve crystal seeds through adopting a hydrothermal synthesis technology, blending and dissolving the crystal seeds and an organic matter in an organic solvent according to a certain ratio to prepare a coating solution, carrying out a dip coating technology to obtain an organic hollow fiber carrier with a composite crystal seed layer, and synthesizing the NaA type molecular sieve membrane on the surface of the composite carrier by adopting the hydrothermal synthesis technology. The molecular sieve membrane has the excellent ethanol / water separation performance of an inorganic membrane, and also has the characteristics of large specific surface area, large filling density and low cost of an organic hollow fiber membrane. The crystal seed layer made in the invention is uniformly distributed, and the molecular sieve membrane obtained in the invention has the advantages of continuous and compact surface, high selectivity and flux, low price, and suitableness for large scale production.
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Description

technical field

[0001] The invention relates to a NaA molecular sieve membrane synthesized on the surface of an organic hollow fiber and a preparation method thereof. Background technique

[0002] As a new membrane separation technology, pervaporation has been extensively researched and applied in the past two decades due to its advantages of high separation efficiency and low energy consumption. The pervaporation membrane technology for the dehydration of organic solvent / water systems achieved industrial application in the 1980s. At present, the pervaporation membrane modules used in industry are single in variety, and most of them are plate and frame membrane modules. Because it requires a mechanical support carrier, the preparation cost is high, which restricts the development of its industrial application.

[0003] Compared with the plate-and-frame membrane module, the hollow fiber membrane module has the advantages of high packing density, small device footprint, and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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