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A kind of mixed matrix film and preparation method thereof

A technology of mixed matrix membrane and mixed solution, which is applied in separation methods, chemical instruments and methods, membranes, etc., can solve the problems of few types and limitations of hybrid membranes, and achieves low cost, simple production method and high gas flux. Effect

Inactive Publication Date: 2021-03-02
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hybrid membranes of inorganic materials and polymers in the prior art are still relatively limited, and there are not many types.

Method used

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  • A kind of mixed matrix film and preparation method thereof
  • A kind of mixed matrix film and preparation method thereof
  • A kind of mixed matrix film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The preparation method of above-mentioned mixed matrix film, comprises the following steps:

[0038] Step 1. Dissolving the soluble intrinsic microporous polymer in chloroform and stirring evenly, and filtering with a microporous membrane to obtain a filtrate;

[0039] Among them, the soluble intrinsic microporous polymer is a prior art, and can be obtained by methods well known to those skilled in the art;

[0040] The amount of chloroform is not particularly limited, as long as it can achieve the purpose of dissolution, usually the mass ratio of soluble intrinsic microporous polymer to chloroform is 90mg:2.5g, the stirring time generally takes 10-60min, the stirring speed is 300r / min, the microporous The pores of the filter membrane are within 4 microns.

[0041] Step 2, adding the metal-organic framework material into chloroform and stirring evenly to obtain a solution;

[0042] Among them, the amount of chloroform is not particularly limited, as long as the purpos...

Embodiment 1

[0054] Step 1, take Eu(NO 3 ) 3 ·6H 2 O, 20 mg H 3 BTC and 40.8 mg NaAc·3H 2 O, add 10ml of DMF and 2ml of ethanol to the mixed solution, and react at 60°C for 5h to obtain JUC-32, which is the MOF material;

[0055] Step 2, take 90mg of PIM-1, dissolve in 2.5g of chloroform solution, stir for 30min to mix evenly, filter with microporous membrane to obtain filtrate;

[0056] Step 3: Take 10 mg of JUC-32 obtained in Step 1, dissolve it in 2.5 g of chloroform solution, and stir evenly to obtain a solution;

[0057] Step 4. Mix the filtrate of step 2 and the solution of step 3 and sonicate for 10 minutes to fully mix PIM-1 and JUC-32, and continue to stir for 12 hours to obtain a mixed solution;

[0058] Step 5. Apply the mixed solution obtained in Step 4 evenly on the surface of the porous silica film, and control the solvent to evaporate completely at 20° C. for 48 hours;

[0059] Step 6. Repeat step 5 and three times to obtain a uniform and continuous mixed matrix membra...

Embodiment 2

[0061] The method of this example is basically the same as that of Example 1, except that 80 mg of PIM-1 is taken in step 2, and 20 mg of JUC-32 is taken in step 3 for mixing, and the synthesized film is recorded as 20% JUC-32@PIM-1 .

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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.

Description

technical field [0001] The invention relates to a mixed matrix membrane and a preparation method thereof, belonging to the technical field of gas separation membranes. Background technique [0002] Fossil energy has been widely used since the second industrial revolution. However, it is accompanied by a sharp increase in the emission of carbon dioxide, which causes the greenhouse effect, causes serious meteorological problems and affects the sustainable development of society. According to reports, the total amount of carbon dioxide produced by human activities in 2017 reached 41 billion tons. According to the National Oceanic and Atmospheric Administration (NOAA), the concentration of carbon dioxide in the atmosphere is increasing year by year. Unfortunately, no major changes are expected in the next 20 years in terms of energy generation and electrical infrastructure. Fossil fuels will still be the main source of energy for human production and life. With the improveme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D69/02B01D69/14B01D67/00B01D71/02B01D71/06B01D53/22
CPCB01D53/228B01D67/0079B01D69/02B01D69/148B01D71/027B01D71/06B01D2325/30
Inventor 贲腾裘式纶魏慧欣
Owner JILIN UNIV
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