A kind of mixed matrix membrane and its preparation method and application

A mixed matrix membrane and mixed dissolution technology, which is applied in the field of material science and gas separation, can solve the problems of reducing the amount of metal-organic framework materials, limiting the wide application of mixed matrix membranes, and irregular morphology, so as to avoid interface defects problems, overcoming interface defects, and ease of industrial application
CN113828170BActive Publication Date: 2022-07-22BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2022-07-22

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Abstract

The invention discloses a mixed matrix membrane and a preparation method and application thereof, belonging to the fields of material science and gas separation. The mixed matrix membrane includes high molecular polymer and porous metal-organic cage complex ZRT-1-4F. The content of the porous metal-organic cage complex ZRT-1-4F in the mixed matrix membrane is 1-12 wt%. The porous metal-organic cage complex ZRT-1-4F filled in the mixed matrix membrane of the present invention is different from the traditional inorganic filling material. The traditional inorganic filling material is that with the increase of the filling amount in the mixed matrix membrane, the membrane The separation performance is better; while the porous metal-organic cage complex ZRT-1-4F prepared by the present invention has the best separation performance at a lower filling amount (3.2wt%), and then with the increase of its filling amount The separation performance of the membrane decreases with increasing.
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Description

technical field

[0001] The invention relates to the field of material science and gas separation, in particular to a mixed matrix membrane and a preparation method and application thereof. Background technique

[0002] The gas separation membrane technology uses different gases in the mixed gas to have different permeation rates to the membrane material under the pressure of the gas on both sides of the membrane, and obtains the enriched material of the permeable gas on the permeable side, and obtains the separation of the non-permeable gas on the non-permeable side. gas, so as to achieve the purpose of gas separation. At present, the commonly used gas separation membrane materials are mainly organic membrane materials. There is an upper limit for organic membrane materials in the gas separation process, that is, the increase in gas permeability leads to a decrease in selectivity (Trade-off effect), and vice versa. To solve this problem, in the prior art, inorganic fillers ...

Claims

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