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A kind of selective uranium adsorption material and its preparation method

An adsorption material and selective technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problem of poor selectivity of uranium adsorption, and achieve good selective adsorption and high-efficiency coordination The effect of performance and large adsorption capacity

Active Publication Date: 2021-08-03
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, most of the current uranium adsorption materials are mainly based on the amidoxime group as a functional group to adsorb uranium. The amidoxime group has a good coordination ability for various metal ions, resulting in the Adsorption materials have poor selectivity for uranium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Add 0.6g vinyl chloride-chlorinated polyvinyl chloride fiber, 1.43g acrylonitrile and 0.35g 2-methacryloyloxyethyl phosphorylcholine into a three-neck round bottom flask, add 15ml ethylene carbonate as a solvent, and add 0.01g cupric chloride and 0.01g cuprous chloride as catalyst, add 0.3g vitamin C as reducing agent, under nitrogen protection, heat to 80°C~120°C, react for 24~48 hours to get the polymer product; use N,N - Repeated washing with dimethylacetamide and ethanol to obtain a polymer product, which was vacuum-dried at 50° C. to obtain the product PCP-MPC-AN.

[0020] 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 to a round bottom flask, add 2.38 g PCP-MPC-AN, stirred and refluxed in a water bath at 80 °C for 8 h, the resulting product was washed repea...

Embodiment 2

[0023] 1. Add 0.6g vinyl chloride-chlorinated polyvinyl chloride fiber, 1.19g acrylonitrile and 0.58g 2-methacryloyloxyethyl phosphorylcholine into a three-neck round bottom flask, add 15ml ethylene carbonate as a solvent, and add 0.01g cupric chloride and 0.01g cuprous chloride as catalyst, add 0.3g vitamin C as reducing agent, under nitrogen protection, heat to 80°C~120°C, react for 24~48 hours to get the polymer product; use N,N - Repeated washing with dimethylacetamide and ethanol to obtain a polymer product, which was vacuum-dried at 50° C. to obtain the product PCP-MPC-AN.

[0024] 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 to a round bottom flask, add 2.37 g PCP-MPC-AN, stirred and refluxed in a water bath at 80 °C for 8 h, the resulting product was washed repea...

Embodiment 3

[0027] 1. Add 0.6g vinyl chloride-chlorinated polyvinyl chloride fiber, 1.65g acrylonitrile and 0.2g 2-methacryloyloxyethyl phosphorylcholine into a three-neck round bottom flask, add 15ml ethylene carbonate as a solvent, and add 0.01g cupric chloride and 0.01g cuprous chloride as catalyst, add 0.3g vitamin C as reducing agent, under nitrogen protection, heat to 80°C~120°C, react for 24~48 hours to get the polymer product; use N,N - Repeated washing with dimethylacetamide and ethanol to obtain a polymer product, which was vacuum-dried at 50° C. to obtain the product PCP-MPC-AN.

[0028] 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 to a round bottom flask, add 2.45 g PCP-MPC-AN, stirred and refluxed in a water bath at 80 °C for 8 h, the resulting product was washed repeat...

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PUM

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Abstract

The invention discloses a selective uranium adsorption material and a preparation method thereof. The raw material components of the selective uranium adsorption material are polyvinyl chloride-chlorinated polyvinyl chloride fiber, acrylonitrile, 2-methacryloyloxyethyl Phosphorylcholine, hydroxylamine hydrochloride. The preparation method first uses polyvinyl chloride-chlorinated polyvinyl chloride fibers of different qualities, and polymerizes acrylonitrile and 2-methacryloyloxyethyl phosphorylcholine to obtain polymer PCP-MPC-AN; adding hydrochloric acid to the polymerized product The amidoximation reaction is carried out in the hydroxylamine solution to obtain the selective uranium adsorption material PCP-MPC-AO of the present invention. The selective uranium adsorption material of the present invention can effectively capture uranium ions, and has the advantages of large adsorption capacity and good selectivity; the selective uranium adsorption material of the present invention has a simple preparation method, high efficiency and good market prospect.

Description

technical field [0001] The invention belongs to the technical field of uranium extraction from seawater, and in particular relates to a selective uranium adsorption material and a preparation method thereof. Background technique [0002] Uranium resources are the basic resources for the sustainable development of the nuclear industry and the strategic resources for the development of nuclear energy in my country. Under the background of the continuous development of nuclear energy, the issue of the guarantee of nuclear fuel uranium has become increasingly prominent. my country has proven reserves of uranium resources of about 200,000 tons, ranking 10th in the world. However, as a populous country, uranium resources are extremely scarce, and the cost of mining uranium in land mines in my country is relatively high. Only 1 ton of uranium can be obtained by processing 1,000 tons of uranium ore, and 3,000 tons of waste water are produced at the same time. In 2015, the Internati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28B01J20/26B01J20/30
CPCB01J20/26C02F1/285C02F2101/006
Inventor 文君黄曾董浩李昊程冲
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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