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A kind of network polymer based on naphthalene tube and its application in drinking water purification

A polymer and drinking water technology, applied in other chemical processes, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as difficult and low partition coefficients

Active Publication Date: 2022-07-05
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low distribution coefficient, it is difficult to achieve efficient removal of 1,4-dioxane by adsorption in water, which needs to be solved

Method used

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  • A kind of network polymer based on naphthalene tube and its application in drinking water purification
  • A kind of network polymer based on naphthalene tube and its application in drinking water purification
  • A kind of network polymer based on naphthalene tube and its application in drinking water purification

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0079] Cyclic compound 1a 2a Preparation of:

[0080] The specific preparation method is as follows:

[0081]

[0082] In a flask, combine benzotriazol-1-yl-oxytripyrrolidinophosphorus hexafluorophosphate (PyBOP) (12 g, 23.1 mmol) and N,N-diisopropylethylamine (DIEA) (4.96 g , 38.4 mmol) was dissolved in 400 mL of DMF. Dissolve diacid (2g, 3.84mmol) and diamine (2.76g, 3.84mmol) in a syringe containing DMF (60mL) respectively, add diamine and diacid dropwise to the above flask with a double syringe pump, add dropwise The time is 8h. The mixture was stirred at room temperature for 24 hours, and then the solvent was removed, and the crude products were separated by column chromatography to obtain cyclic compounds 1a and 2a (eluent: EA / CH). 2 Cl 2 = 1 / 3).

Embodiment 1

[0084] The present embodiment provides a network polymer P1 based on naphthalene tube, and its preparation method is as follows:

[0085]

[0086] The cyclic compound 1a (400 mg), bisazide (154 mg), copper sulfate pentahydrate (50 mg) and sodium ascorbate (50 mg) were dissolved in 80 mL of dimethyl sulfoxide and reacted at 80° C. for 48 hours under argon protection. After the reaction, it was poured into 50 mL of water, and a large amount of solid was precipitated. The solid was washed three times with a saturated aqueous solution of EDTA (20 mL), methanol (20 mL), and ultrapure water (20 mL), and then vacuum-dried at 80 ° C for 10 hours to obtain Polymer P1 (where L 1 for ), the weight-average molecular weight of P1 was 1.5×10 measured by gel chromatography 4 g / mol.

Embodiment 2

[0088] The present embodiment provides a kind of network polymer P2 based on naphthalene tube, and its preparation method is as follows:

[0089]

[0090] Cyclic compound 2a (400 mg), diazide (154 mg), copper sulfate pentahydrate (50 mg) and sodium ascorbate (50 mg) were dissolved in 80 mL of dimethyl sulfoxide, and reacted at 80° C. for 48 hours under argon protection. After the reaction, it was poured into 50 mL of water, and a large amount of solid was precipitated. The solid was washed three times with a saturated aqueous solution of EDTA (20 mL), methanol (20 mL), and ultrapure water (20 mL), and then vacuum-dried at 80 ° C for 10 hours to obtain Polymer P2 (where L 1 for ), the weight-average molecular weight of P2 was 1.4×10 measured by gel chromatography 4 g / mol.

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Abstract

The present invention provides a naphthalene tube-based network polymer and its application in drinking water purification. The naphthalene tube-based network polymer is a polymerization product of a cyclic compound and a bridged compound; the cyclic compound is selected from one of the compounds having the structures shown in formula I, formula II, formula III or formula IV or a combination of at least two; the bridging compound is selected from compound R 2 ‑L‑R 2 one or a combination of at least two. The naphthalene tube-based network polymer provided by the present invention has cavities formed by cyclic compound molecules, has strong adsorption effect on organic pollutants, especially dioxane, and can be used as a polymer adsorbent, For purification of organic pollutants in drinking water.

Description

technical field [0001] The invention belongs to the technical field of organic pollutant treatment, relates to the technical field of polymer adsorbents, and particularly relates to a naphthalene tube-based reticulated polymer and its application in drinking water purification. Background technique [0002] Water is an essential substance for sustaining life and metabolism. The quality of water quality is directly related to the health of the human body. According to a survey by the World Health Organization, 80% of human diseases are related to water, and poor water quality can cause a variety of diseases. With the acceleration of urbanization and industrialization, the seepage and leakage of urban sewage, domestic waste and industrial waste, as well as chemical fertilizers and pesticides will cause the deterioration of surface water and groundwater quality. Water pollution not only seriously damages the natural ecological environment, but also seriously threatens human be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C08G75/045C08G69/26G01N24/08G01N21/33B01J20/26B01J20/28C02F1/28C02F101/30
CPCC08G73/0605C08G75/045C08G69/26G01N24/08G01N21/33B01J20/262B01J20/28033B01J20/28054C02F1/285C02F2101/30
Inventor 蒋伟杨留攀柯华
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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