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A kind of ionic liquid extraction resin and its preparation and application method

A technology of extraction resin and ionic liquid, which is applied in the field of ionic liquid extraction resin for the efficient recovery of rare earths, can solve the problems of poor stability and single function of the extraction agent, and achieve high adsorption rate and adsorption selectivity

Active Publication Date: 2015-10-21
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of single function and poor stability of extraction agent in traditional extraction and leaching resins, to provide an ionic liquid extraction and leaching resin with designable anion and cation structure characteristics, which can efficiently recover rare earths, and its preparation and application method

Method used

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  • A kind of ionic liquid extraction resin and its preparation and application method
  • A kind of ionic liquid extraction resin and its preparation and application method
  • A kind of ionic liquid extraction resin and its preparation and application method

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0035] (1) Wash the strong base styrene resin (chlorine type) with 2% (wt) hydrochloric acid solution and 2% (wt) sodium hydroxide solution respectively, and wash repeatedly with deionized water until the pH value of the effluent liquid is neutral , and finally use sodium hydroxide solution and resin to stir and react at room temperature, the pH value of the deionized water washing solution is neutral, filter, and dry at 20°C to obtain a strong base styrene resin of the hydroxide type; the chlorine The volume ratio of type strong alkali styrene resin to hydrochloric acid and sodium hydroxide solution is 1:1;

[0036] (2) Disperse the hydroxide type strong base styrene resin obtained in step (1) into N,N-dimethylformamide, swell at room temperature for 0.5h, then add bis-(2,4,4-tris Methylpentyl)phosphonic acid (Cyanex272), after fully reacting for 6h, filter out the resin, wash the resin with absolute ethanol, and dry at 20°C to obtain the ionic liquid extraction resin modifie...

preparation Embodiment 2

[0039] (1) Wash the strong base styrene resin (chlorine type) with 4% (wt) hydrochloric acid solution and 4% (wt) sodium hydroxide solution respectively, and wash repeatedly with deionized water until the pH value of the effluent liquid is neutral , and finally use sodium hydroxide solution and resin to stir and react at room temperature, the pH value of the deionized water washing solution is neutral, filter, and dry at 50°C to obtain a strong base styrene resin of the hydroxide type; the chlorine The volume ratio of type strong base styrene resin to hydrochloric acid and sodium hydroxide solution is 1:4;

[0040] (2) Disperse the hydroxide-type strong base styrene resin obtained in step (1) into N,N-dimethylformamide, swell for 2 hours at room temperature, and then add bis-(2,4,4-trimethyl Amylpentyl)phosphonic acid (Cyanex272). After fully reacting for 12h, the resin was filtered out, washed with absolute ethanol, and dried at 50°C to obtain the ionic liquid extraction resi...

preparation Embodiment 3

[0043] (1) Wash the strong base styrene resin (chlorine type) with 3% (wt) hydrochloric acid solution and 3% (wt) sodium hydroxide solution respectively, and wash repeatedly with deionized water until the pH value of the effluent liquid is neutral , and finally use sodium hydroxide solution and resin to stir and react at room temperature, the pH value of the deionized water washing solution is neutral, filter, and dry at 40°C to obtain a strong base styrene resin of the hydroxide type; the chlorine The volume ratio of type strong base styrene resin to hydrochloric acid and sodium hydroxide solution is 1:2;

[0044](2) Disperse the hydroxide-type strong base styrene resin obtained in step (1) into N,N-dimethylformamide, swell at room temperature for 6 hours, and then add bis-(2,4,4-trimethyl Amylpentyl)phosphonic acid (Cyanex272). After fully reacting for 21h, the resin was filtered out, washed with absolute ethanol, and dried at 40°C to obtain the ionic liquid extraction resin...

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Abstract

The invention relates to ionic liquid extraction resin capable of realizing high-efficiency recycling of rare earth as well as preparation and an application method of the ionic liquid extraction resin. The ionic liquid extraction resin has a designable zwitterion structural characteristic; the physical and chemical property of the ionic liquid extraction resin can be regulated and controlled by changing the structure or the type of zwitterions, so that the problems of the conventional extraction resin has a single function and the conventional extraction agent is low in stability are solved; and the ionic liquid extraction resin can be used for recycling and separation of rare earth in a solution. According to the preparation method of the ionic liquid extraction resin, syrene anion exchange resin is used as a carrier material, and an acidic phosphine extraction agent is introduced into a syrene-divinylbenzene framework under the action of a non-covalent bond, so that the ionic liquid extraction resin modified by the acidic phosphine extraction agent is obtained. The ionic liquid extraction resin provided by the invention can effectively recycle rare earth ions, is high in adsorption rate and adsorption selectivity to the rare earth ions and can be used for the separation and the recycling of the rare earth in a complicated system.

Description

technical field [0001] The invention belongs to the field of ionic liquid extraction and leaching resins, and in particular relates to an ionic liquid extraction and leaching resin capable of efficiently recovering rare earths and a preparation and application method thereof. Background technique [0002] Extraction and separation technology has been widely used in many fields, but it is not an economical and effective method to directly use solvent extraction to recover and separate rare earths in dilute solutions. It also has the high solubility of some extractants, which may easily cause the loss of organic phase. , The discharge of organic waste liquid will increase the environmental burden and other problems, and the development of extraction resin separation technology provides a new way for the above problems. The extraction resin is prepared by adsorbing the extractant onto a macroporous polymer carrier. It combines the high selectivity of the solvent extraction meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/42C22B3/38C22B59/00
CPCY02P10/20
Inventor 陈继崔红敏杨华玲刘郁邓岳锋王威
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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