Polyamine uranium adsorption material and preparation method thereof

An adsorption material and polyamine technology, which are applied in the field of polyamine uranium adsorption materials and their preparation, can solve the problems of low uranium adsorption capacity, complicated preparation process, high cost of raw materials, etc., and achieve good acid-base stability and preparation method. Simple and highly resistant to salt ions

Active Publication Date: 2019-01-18
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional uranium adsorption materials mainly rely on the coordination of amidoxime groups to adsorb uranium, and the adsorption capacity for uranium is generally not high.
There are a few new uranium adsorption materials with high adsorption capacity for uranium, but they also have the disadvantages of expensive raw material costs and complicated preparation processes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Add 2g of polyacrylonitrile PAN and 1g of hyperbranched amine CA into a three-neck round bottom flask, add 20 ml of dimethyl sulfoxide as a solvent, and add 5 g of anhydrous aluminum chloride, heat to 80°C~120°C, and react After 24 to 48 hours, the cross-linked product was obtained; the cross-linked product was repeatedly washed with ethanol to obtain a condensation product, and the condensation product was vacuum-dried at 50°C to obtain the product PAN-AC.

[0019] 2. Prepare 40ml of hydroxylamine hydrochloride solution with a mass fraction of 10%, and the solvent is a mixed solvent of water and methanol at a volume ratio of 1:1; then add sodium hydroxide to adjust the pH value to weakly alkaline pH8~pH10 and add 3g to a round bottom flask PAN-AC was stirred and refluxed in a water bath at 80°C for 8 h, the obtained product was repeatedly washed with ethanol, and the fiber product was vacuum-dried at 50°C to obtain the desired PAO-AC.

[0020] After testing, the a...

Embodiment 2

[0022] 1. Add 2g of polyacrylonitrile PAN and 2g of hyperbranched amine CA into a three-neck round bottom flask, add 20 ml of dimethyl sulfoxide as a solvent, and add 5 g of anhydrous aluminum chloride, heat to 80°C~120°C, and react After 24 to 48 hours, the cross-linked product was obtained; the cross-linked product was repeatedly washed with ethanol to obtain a condensation product, and the condensation product was vacuum-dried at 50°C to obtain the product PAN-AC.

[0023] 2. Prepare 40ml of hydroxylamine hydrochloride solution with a mass fraction of 10%. The solvent is a mixed solvent of water and methanol with a volume ratio of 1:1; then add sodium hydroxide to adjust the pH value to weakly alkaline pH8~pH10 and add it to a round bottom flask, add 4g PAN-AC was stirred and refluxed in a water bath at 80°C for 8 h, the obtained product was repeatedly washed with ethanol, and the fiber product was vacuum-dried at 50°C to obtain the desired PAO-AC.

[0024] After testing,...

Embodiment 3

[0026] 1. Add 2g of polyacrylonitrile PAN and 0.33g of hyperbranched amine CA into a three-neck round bottom flask, add 20 ml of dimethyl sulfoxide as a solvent, and add 5 g of anhydrous aluminum chloride, heat to 80 ° C ~ 120 ° C, React for 24 to 48 hours to obtain a cross-linked product; wash the cross-linked product repeatedly with ethanol to obtain a condensation product, and dry the condensation product under vacuum at 50°C to obtain the product PAN-AC.

[0027] 2. Prepare 40ml of hydroxylamine hydrochloride solution with a mass fraction of 10%. The solvent is a mixed solvent of water and methanol at a volume ratio of 1:1; add sodium hydroxide to adjust the pH value to weakly alkaline pH8~pH10 and add to a round bottom flask, add 2.33 g PAN-AC, stirred and refluxed in a water bath at 80°C for 8 h, the resulting product was washed repeatedly with ethanol, and the fiber product was vacuum-dried at 50°C to obtain the desired PAO-AC.

[0028] After testing, the above-mentio...

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PUM

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Abstract

The invention discloses a polyamine uranium adsorption material and a preparation method thereof. The polyamine uranium adsorption material is prepared from polyacrylonitrile, hyperbranched amine andhydroxylamine hydrochloride. According to the preparation method, firstly different masses of polyacrylonitrile and hyperbranched amine are subjected to condensation to obtain polymers PAN-AC; condensation products are added into a hydroxylamine hydrochloride solution for amidoximation reaction; the polyamine uranium adsorption material PAO-AC can be obtained. The polyamine uranium adsorption material can be used for effectively capturing uranium ions; the advantages of great abdsorption volume and highgood acid and alkali stability and the like are realized. The polyamine uranium adsorption material has the advantages that the preparation method is simple and convenient; the efficiency is high; good market prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of uranium extraction from seawater and uranium-containing wastewater treatment, and in particular relates to a polyamine uranium adsorption material and a preparation method thereof. Background technique [0002] As an important nuclear fuel, uranium is a very important resource. On the one hand, high-efficiency uranium extraction materials can be used to extract uranium from seawater. There are about 4.5 billion tons of uranium in seawater. If the uranium resources in seawater can be utilized, uranium will be an "inexhaustible" resource. Resources are sufficient to ensure the sustainable development of human energy; on the other hand, uranium extraction materials can be used for the treatment of uranium-containing waste liquid to reduce its harm to the environment. Therefore, the research and development of uranium extraction materials has important application value and strategic significance. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/26B01J20/30
CPCB01J20/26C02F1/285C02F2101/006
Inventor 文君何宁宁李昊熊洁程冲
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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