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Fluorinated conjugated microporous polymer absorption material and application thereof

A technology of conjugated micropores and adsorption materials, applied in the direction of adsorption of water/sewage treatment, other chemical processes, chemical instruments and methods, etc., can solve the problems of poor kinetic adsorption performance, long adsorption equilibrium time, and low adsorption capacity. Achieve the effect of large adsorption capacity, good kinetic adsorption performance and high selectivity

Inactive Publication Date: 2014-06-25
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Activated carbon is widely used in the removal of metal ions due to its large specific surface area and low cost, but it also has some insurmountable disadvantages, such as low adsorption capacity, poor regeneration ability, poor selectivity, kinetics, etc. The poor adsorption performance leads to a long time to reach the adsorption equilibrium, so its application is also greatly limited.
Other adsorbent materials reported so far include biomass-based adsorbent materials such as lignin and chitosan, geological materials such as clay and zeolite, and synthetic materials such as polyvinyl resin and silica-based resin, but they all exist in different degrees. Activated Carbon Similar Disadvantages

Method used

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  • Fluorinated conjugated microporous polymer absorption material and application thereof
  • Fluorinated conjugated microporous polymer absorption material and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] (1) Synthesis of 1,3,5-trifluoro-2,4,6-tris(trimethylsilylethynyl)benzene

[0021] Add 300mg of 1,3,5-trifluoro-2,4,6-triiodobenzene, 16.8mg of bis(triphenylphosphine)palladium dichloride and 6.19mg of cuprous iodide into a mixed solution of 10mL of triethylamine and 5mL of tetrahydrofuran , the whole system was placed in an argon atmosphere, and after stirring at room temperature for 30 minutes, 0.49 mL of trimethylsilylacetylene was dropped into the above system with a syringe, and refluxed at 50° C. for 48 hours. The solvent was removed, and the desired 1,3,5-trifluoro-2,4,6-tris(trimethylsilylethynyl)benzene compound was obtained through separation and purification by column chromatography. 1 H NMR(400MHz):δ=0:26(s,27H).

[0022] (2) Synthesis of 1,3,5-trifluoro-2,4,6-triethynylbenzene

[0023] Dissolve 1.3g of 1,3,5-trifluoro-2,4,6-tris(trimethylsilylethynyl)benzene, 810mg of ammonium fluoride and 130mg of tetra-n-butylammonium fluoride in 20mL of tetrahydrofuran...

Embodiment 2

[0029] Dissolve 900 mg of 1,3,5-triethynylbenzene, 127.5 mg of bis(triphenylphosphine)palladium(II) dichloride and 33 mg of cuprous iodide into a mixed solution of 6 mL of toluene and 6 mL of triethylamine , under an argon atmosphere, heated to 70°C while stirring. After 36 hours of reaction, the product was filtered and washed with chloroform, methanol, water and acetone in turn, and then the product was put into a Soxhlet extractor, and methanol was used as the After solvent extraction for 3 days, the product was baked at 100° C. for 24 hours to constant weight to obtain a conjugated microporous polymer product.

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Abstract

The present invention provides a fluorinated conjugated microporous polymer providing good absorption capacity for heavy metal ions in a water body, and a preparation method thereof. The fluorinated conjugated microporous polymer is prepared by respectively carrying out catalysis copolymerization on 1,3,5-trifluoro-2,4,6-triethynylbenzene or 1,3,5-triethynylbenzene, wherein the specific surface area is about 700-1000 m<2> / g, the contact angle of the surface water is 155-167 DEG, the polymer provides selective absorption ability (only absorbs heavy metal ions, and does not absorb water) for heavy metal ions in the water body, the re-use performance is good, and the absorption capacity on heavy metal ions such as Cu<2+>, Ni<2+> and Cd<2+> is 0.07-0.18 mmol / g. According to the present invention, the material preparation process route is simple, the operations are easy, advantages of high absorption capability, high selectivity, good dynamics absorption property, good re-use property and the like are provided when the material is applied for heavy metal ion absorption in the water body, and the polymer has potential application values in the fields of crude oil leakage treatment, industrial inorganic wastewater treatment, liquid / liquid separation, water treatment and the like.

Description

technical field [0001] The invention relates to the synthesis of fluorinated conjugated microporous macromolecule with superhydrophobic properties and its application as an adsorbent to remove heavy metal ions in sewage. Background technique [0002] The problem of water pollution has attracted increasing attention in the world. With the vigorous development of the economy, a large amount of heavy metal ions contained in the wastewater discharged from industrial production have caused great harm to both the environment and human health. Therefore, it is urgent to find a method that can effectively remove heavy metal ions. At present, the methods used to treat heavy metal ions mainly include: reverse osmosis, ion exchange, membrane filtration, and adsorption, among which the adsorption method is widely used because of its low cost, good effect, and strong operability. An extremely important physicochemical method in processing applications. The choice of adsorption materia...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 邓伟侨杨瑞霞
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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