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Sulfydryl-functionalized microporous polymer as well as preparation and application of sulfydryl-functionalized polymer of intrinsic microporosity (PIM-1)

A microporous polymer, functionalized technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of no adsorption effect and insufficient dispersion of mercury ions, and achieve the effect of good affinity

Active Publication Date: 2021-03-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PIM-1 itself is highly hydrophobic and cannot be sufficiently dispersed in the aqueous phase, so it has almost no adsorption effect on mercury ions

Method used

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  • Sulfydryl-functionalized microporous polymer as well as preparation and application of sulfydryl-functionalized polymer of intrinsic microporosity (PIM-1)
  • Sulfydryl-functionalized microporous polymer as well as preparation and application of sulfydryl-functionalized polymer of intrinsic microporosity (PIM-1)
  • Sulfydryl-functionalized microporous polymer as well as preparation and application of sulfydryl-functionalized polymer of intrinsic microporosity (PIM-1)

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Add tetrafluoroterephthalonitrile (1.80g, 9.00mmol), 5,5',6,6'-tetrahydroxy-3,3',3,3'-tetramethyl-1 into a 100mL three-necked flask , 1'-spirobisindane (3.06 g, 9.00 mmol) and anhydrous potassium carbonate (4.98 g, 36.0 mmol).

[0031] 2. Add 50.0 mL of anhydrous DMF to the above flask.

[0032] 3. React the above system at 65°C for 72h under the protection of argon.

[0033] 4. After cooling to room temperature, the reaction mixture was poured into excess deionized water, and the product was obtained by suction filtration.

[0034] 5. Extract and wash the product obtained in step 4 with ethanol Soxhlet, and then dry it in vacuum at 60°C for 12 hours to obtain the final product PIM-1, with an average molecular weight of 20,000-40,000 and a specific surface of 600-1,000 m 2 / g, the pore size is 0.02-0.1nm.

[0035] 6. Weigh 1.50g of PIM-1 powder into a 250mL flask, then add 75.0mL of water, 75.0mL of ethanol and 33.8g of potassium hydroxide.

[0036] 7. Reflux the...

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Abstract

The invention relates to preparation of a sulfydryl-functionalized PIM-1 and application of the sulfydryl-functionalized PIM-1 to adsorption of mercury ions. According to the invention, monomers including 2,3,5,6-tetrafluoro-1,4-benzenedicarbonitrile and 5,5',6,6'-tetrahydroxy-3,3',3',3'-tetramethyl-1,1'-spirobiindane are polymerized to obtain the PIM-1; then a nitrile group on a polymer chain isconverted into a carboxyl group so as to facilitate sulfhydrylation modification in the next step; and a final sulfhydrylation process is divided into two steps; namely, the carboxyl group on the polymer is bonded with diamine with a disulfide bond, and then the disulfide bonds is opened with dithiothreitol to expose a sulfydryl group, so the sulfydryl-functionalized PIM-1 is obtained. The polymeris rich in sulfydryl groups, has good affinity to mercury ions, and can be applied to selective adsorption of mercury ions.

Description

technical field [0001] The invention relates to the preparation of a mercapto functionalized self-porous polymer (PIMs) and its application in the adsorption of mercury ions. Background technique [0002] Environmental pollution is an increasingly serious threat facing society today. The removal of pollutants from air and water is an important aspect of environmental pollution control. Among all pollutants, heavy metal ions (especially mercury ions) can cause serious damage to the human body (document 1.Nolan et.al. "Tools and Tactics for the Optical Detection of Mercuric Ion", "Chemical Reviews", 2008, 108 , 3443-3480), such as the brain, nervous system, kidneys and even the reproductive system. The development of corresponding adsorbents is a relatively important field of scientific research. In order to find high-efficiency, high-capacity, and high-selectivity mercury ion adsorption materials, scientists have tested a variety of porous materials, including zeolites, me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40C08G65/48B01J20/26B01J20/30C02F1/28C09K9/02C02F101/20
CPCB01J20/265C02F1/285C02F2101/20C08G65/4006C08G65/48C08G2650/50C09K9/02
Inventor 欧俊杰徐俊文叶明亮于之渊姜利孙传盛
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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