Benzimidazole-amidoxime fiber as well as preparation method and application thereof

A technology of benzimidazole and bromobenzimidazole, which is applied in the field of benzimidazole-amidoxime fiber and its preparation, can solve the problems of difficulty in extracting uranium and affecting the reusability of adsorption materials, and achieve the effect of great practical value

Pending Publication Date: 2021-11-30
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, because there are many microorganisms in seawater, they are attached to the adsorbent material, which seriously affects the reusable performance of the adsorbent material.
These factors have brought great difficulties to the extraction of uranium from seawater

Method used

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  • Benzimidazole-amidoxime fiber as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0047] Put 5 g of acrylonitrile-methyl acrylate copolymer fiber, amine-based reagent and 300 mL of the first solvent in a Schlank bottle sealed with a flip-top stopper at T 1 Reflux at temperature with stirring t 1 time, the first reaction product was obtained. The first reaction product was washed 5 times with acetone and deionized water successively, and then at T 2 Dry at low temperature for 24 hours to obtain aminated fiber.

[0048] Put 5g of aminated fiber, 300mL of the second solvent, 0.5g of catalyst, 2mL of acid-binding agent and 2-bromobenzimidazole in a Schlank bottle sealed with a turn-top stopper at T 3 Reflux at temperature with stirring t 2 time, the second reaction product was obtained. The second product was washed successively with deionized water and acetone, and then at T 4 vacuum drying at high temperature for 24 hours to obtain benzimidazole functionalized fibers.

[0049] Put 5 g of benzimidazole functionalized fiber, hydroxylamine hydrochloride, 1...

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Abstract

The invention discloses a benzimidazole-amidoxime fiber as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) subjecting 5 parts by weight of an acrylonitrile-methyl acrylate copolymer fiber to reacting with 1-15 parts by weight of an amino reagent to obtain an aminated fiber, wherein the amino reagent is one or more selected from a group consisting of ethylene diamine, triethylene tetramine and dimethylamine; (2) subjecting 5 parts by weight of the aminated fiber to reacting with 3-20 parts by weight of 2-bromobenzimidazole to obtain a benzimidazole functional fiber; and (3) carrying out a reaction on 5 parts by weight of the benzimidazole functional fiber and 10-40 parts by weight of hydroxylamine hydrochloride to obtain the benzimidazole-amidoxime fiber. The benzimidazole-amidoxime fiber prepared by using the method has high adsorption capacity on uranium in seawater.

Description

technical field [0001] The invention relates to a benzimidazole-amidoxime fiber and its preparation method and application, in particular to a benzimidazole-amidoxime fiber used for extracting uranium from seawater and its preparation method and application. Background technique [0002] Uranium resources have a fundamental position and role in the development of my country's nuclear industry. Judging from the current situation and trend of supply and demand of uranium resources, my country's economically recoverable reserve uranium resources are obviously insufficient. Therefore, exploring and exploiting unconventional uranium resources is one of the strategic choices. [0003] There are huge reserves of uranium resources in the ocean, which are important and promising unconventional uranium resources. There are many methods for extracting uranium from seawater, among which the adsorption method is one of the most concentrated and widely used methods at present. Uranium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F103/08
CPCB01J20/265B01J20/28011C02F1/285C02F2101/006C02F2103/08
Inventor 陈树森宋艳任宇勾阳飞王凤菊宿延涛
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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