Preparation method of triazinyl calix [4] arene porous polymer and application thereof

A porous polymer, triazine-based cup technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., to achieve the effect of large adsorption capacity and high efficiency

Active Publication Date: 2019-04-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[1] However, these materials are limited to the adsorption of I in iodine vapor 2 , and its adsorption behavior in water phase is rarely reported. Due to its stable structure, this material can be used to adsorb iodine in water

Method used

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  • Preparation method of triazinyl calix [4] arene porous polymer and application thereof
  • Preparation method of triazinyl calix [4] arene porous polymer and application thereof
  • Preparation method of triazinyl calix [4] arene porous polymer and application thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1.CalPOP-1 iodine adsorption experiment

[0035] 25mg of CalPOP-1 (denoted as m) and potassium iodide solution of iodine (by 600mg KI, 300mg I 2 Dissolve in 2mLH 2 O for preparation) into a 5mL glass bottle at the same time, then seal the bottle mouth, place the glass bottle at room temperature, the pressure is normal pressure, filter after 2h, 4h, 6h, 8h, 10h, 24h, weigh the adsorption The mass of CalPOP-2 is recorded as m a , according to the formula m a -m calculated adsorption capacity is 54mg, 59.7mg, 59.8mg, 60mg, 60mg, 60mg ( image 3 ).

Embodiment 2

[0036] Embodiment 2.CalPOP-2 iodine adsorption experiment

[0037] 25mg of CalPOP-2 (denoted as m) and potassium iodide solution of iodine (by 600mg KI, 300mg I 2 Dissolve in 2mLH 2 O for preparation) into a 5mL glass bottle at the same time, then seal the bottle mouth, place the glass bottle at room temperature, the pressure is normal pressure, filter after 2h, 4h, 6h, 8h, 10h, 24h, weigh the adsorption The mass of CalPOP-1 is recorded as m a , according to the formula m a -m calculated adsorption capacity is 2.6mg, 9.1mg, 10mg, 10.3mg, 10.3mg, 10.3mg ( image 3 ). Compared with CalPOP-1, the substituents on the lower edge of caliPOP-2 range from ethyl to butyl, and the steric positions increase. After polymerization, the specific surface area will decrease, thereby reducing the amount of iodine adsorption.

Embodiment 3

[0038] Embodiment 3.CalPOP-1 iodine desorption experiment

[0039] Weigh 10 mg of CalPOP-1 after absorbing iodine and place in Al 2 o 3 The crucible starts from 28°C, high-purity nitrogen is used as the protective gas in the furnace, and the ambient gas is also high-purity nitrogen. The temperature of the instrument is controlled at 28°C, preheated for 20 minutes, so that the sample temperature is balanced to 28°C, and the heating program is as follows: the initial temperature is 28°C, and the temperature rises to 700°C at a rate of 5°C per minute. According to the obtained TGA curve, it can be concluded that the desorption behavior of iodine occurs at 90-290°C. Figure 4 For the present invention CalPOP-1 and CalPOP-1_I 2 thermogravimetric curve.

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Abstract

The invention discloses a preparation method of a triazinyl calix [4] arene porous polymer and application thereof, which polymerizes s-triazine and the amino on the upper edge of 4-amino calixarene to form the C-N bonds so as to construct a triazinyl calix [4] arene porous polymer. According to the preparation method of a triazinyl calix [4] arene porous polymer and application thereof, the 4-amino calixarene modified by s-triazine which is rich in nitrogen atoms not only increases the nitrogen content of the polymer and the specific surface area of the material, but also improves the thermalstability of the polymer. The triazinyl calix [4] arene porous polymer is stable to humidity and water and exhibits a relatively high loading capacity for iodine in the aqueous solutions, which is upto 240%.

Description

technical field [0001] The invention belongs to the technical field of organic porous polymer preparation, and in particular relates to a triazine-based calix[4]arene porous polymer, a preparation method and an application thereof. Background technique [0002] With the rapid development of the times, the huge energy consumption and the rapid development of nuclear energy, the issue of spent fuel reprocessing has attracted more and more attention. In a nuclear power accident, not only a large amount of 131 I, and long-lived 129 The relative content of I is also very high, especially worthy of attention is 129 I (half-life of 15.7 million years). Although radionuclides 131 I is short-lived (half-life of 8.02 days), but it is highly volatile and causes mutation and death in penetrating cells. Therefore, it needs to be purified and removed in the reprocessing plant. [0003] At present, the capture methods of radioactive iodine mainly include liquid absorption method and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06B01J20/26C02F1/28B01J20/30C02F101/12
CPCB01J20/262C02F1/285C02F2101/12C08G73/0638C08G73/065
Inventor 李亮张志忠李寒雪安朵张兴华
Owner SHANGHAI INST OF TECH
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