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A polymer-based supramolecular adsorbent and its preparation method and application

A molecular adsorption and polymer technology, applied in chemical instruments and methods, other chemical processes, improvement of process efficiency, etc., can solve the problems of high acidity, high radioactivity, high toxicity, etc., and achieve fast separation speed, simple operation, and selectivity good sex effect

Inactive Publication Date: 2016-11-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The high-level waste liquid (HLLW) produced by spent fuel reprocessing is a highly acidic, highly radioactive and highly toxic mixed solution. During the separation process of the exothermic element Cs and the exothermic element Sr, the resulting alkali metal and alkaline earth metal solution Generally may contain NaNO 3 、KNO 3 , RbNO 3 , CsNO 3 , Sr(NO 3 ) 2 , Ba(NO 3 ) 2 And a certain amount of palladium, there is no effective method in the prior art to effectively separate the palladium in the solution

Method used

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  • A polymer-based supramolecular adsorbent and its preparation method and application
  • A polymer-based supramolecular adsorbent and its preparation method and application
  • A polymer-based supramolecular adsorbent and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Weigh 2.5g of peracetoxy-substituted arene derivatives shown in structural formula (I) in a 250mL round bottom flask, add 150mL of methanol, heat to 60°C to completely dissolve the arene derivatives, add 12.5g under stirring conditions After the activated porous resin, move the system into a water bath, rotate and stir at 45°C for 120 minutes on a rotary evaporator, then raise the temperature to 65°C, and continue to rotate and stir for 180 minutes until the mixture is a loose powder. During this process, all acetic acid The aryl-substituted aromatic hydrocarbon derivatives entered the pores of the activated XAD-7 carrier through capillary action, and finally, dried in vacuum at 45°C overnight to obtain a white loose porous polymer-based supramolecular adsorbent.

Embodiment 2

[0036] Weigh 2.5g of peracetoxy-substituted arene derivatives shown in structural formula (I) in a 250mL round bottom flask, add 125mL of methanol, heat to 60°C to completely dissolve the arene derivatives, add 10.0g of After activated porous resin, move the system into a water bath, rotate and stir at 40°C for 130 minutes on a rotary evaporator, then raise the temperature to 60°C, and continue to rotate and stir for 180 minutes until the mixture is a loose powder. During this process, all acetic acid The aryl-substituted arene derivatives entered the pores of the activated XAD-7 carrier through capillary action, and finally, dried in vacuum at 40°C overnight to obtain a white loose porous polymer-based supramolecular adsorbent.

Embodiment 3

[0038] Weigh 2.5g of peracetoxy-substituted arene derivatives shown in structural formula (I) in a 250mL round bottom flask, add 175mL of methanol, heat to 55°C to completely dissolve the arene derivatives, add 15.0g of After the activated porous resin, move the system into a water bath, rotate and stir at 45°C for 140min on a rotary evaporator, then raise the temperature to 65°C, and continue to rotate and stir for 190min until the mixture is a loose powder. During this process, all acetic acid The aryl-substituted aromatic hydrocarbon derivatives entered the pores of the activated XAD-7 carrier through capillary action, and finally, dried in vacuum at 45°C overnight to obtain a white loose porous polymer-based supramolecular adsorbent.

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Abstract

The invention discloses a polymer-based supramolecular adsorbent, a preparation method and application thereof. The preparation method comprises the following steps: (1), adopting methyl alcohol to perform activating treatment to medium-polarity porous resin, so as to obtain activated porous resin; (2), enabling an arene derivative shown as the structural format (I) to be dissolved in methyl alcohol to obtain a methanol solution of the arene derivative; (3), mixing the activated porous resin with the methanol solution of arene derivative, and sequentially rising the temperature, stirring and performing vacuum drying to obtain the polymer-based supramolecular adsorbent. According to the polymer-based supramolecular adsorbent, the preparation method and application thereof, provided by the invention, when palladium separation is carried out through the adsorbent, the selectivity is good, the separation speed is high, the operation is simple, and high easiness in industrial promotion is achieved.

Description

technical field [0001] The invention relates to the technical field of element separation, in particular to a polymer-based supramolecular adsorbent and its preparation method and application. Background technique [0002] Elemental palladium is a silver-white transition metal with soft texture, good ductility and plasticity, and can be forged, rolled and drawn. [0003] The chemical properties of elemental palladium are inactive, and it is stable in air and humid environment at room temperature. When heated to 800°C, a palladium oxide film forms on the surface of palladium. Elemental palladium can resist the erosion of hydrofluoric acid, phosphoric acid, perchloric acid, hydrochloric acid and sulfuric acid vapor, but it is easily soluble in aqua regia and hot concentrated sulfuric acid and concentrated nitric acid. Both are corrosive. [0004] Block metal palladium can absorb a large amount of hydrogen. At room temperature, 1 volume of sponge palladium can absorb 900 volu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/26C22B3/24C22B11/00
CPCY02P10/20
Inventor 张安运何敏清
Owner ZHEJIANG UNIV