An extractant and adsorbent containing effective functional groups and its application in the extraction and separation of thorium metal

An adsorbent and extractant technology, applied in the field of extraction and separation of radioactive elements, can solve problems such as inability to remove completely, and achieve the effects of improved reusability, stable chemical structure, and expanded separation.

Active Publication Date: 2021-05-18
中科新镧系(厦门)科技有限公司
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention proposes to solve the problem that radioactive metal elements and general metal elements cannot be completely removed in the process of separating and purifying rare earth elements from rare earth ores (such as monazite, bastnaesite, etc.), designs and develops compounds containing effective functional groups, and applies In liquid-liquid extraction (extractant) and solid-liquid extraction (adsorbent material), it can effectively remove radioactive metal elements in rare earth elements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An extractant and adsorbent containing effective functional groups and its application in the extraction and separation of thorium metal
  • An extractant and adsorbent containing effective functional groups and its application in the extraction and separation of thorium metal
  • An extractant and adsorbent containing effective functional groups and its application in the extraction and separation of thorium metal

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0071] The present invention also provides the preparation method of above-mentioned extractant, according to the type difference of extractant, the preparation method of described extractant is as follows:

[0072] In a preferred embodiment of the present invention, the extractant (E1 ) and (E 2 ) preparation method comprises the steps:

[0073] Compound shown in formula (IV) and R 1 R 2 NH is a raw material, and at a certain temperature, reacts to prepare an extractant (E 1 ) or (E 2 );

[0074]

[0075] Among them, X 1 , R 1 , R 2 is defined as above.

[0076] In a preferred embodiment of the present invention, the extractant (E 1 ) and (E 2 ) preparation method specifically comprises the steps:

[0077] 1) compound shown in formula (IV) and R respectively 1 R 2 NH is dissolved in an organic solvent, where, X 1 , R 1 , R 2 as defined above;

[0078] 2) The above two solutions are mixed and reacted to prepare the extractant (E 1 ) or (E 2 ).

[0079] W...

Embodiment 1

[0162] Embodiment 1 extractant (E 1-1 ) Synthesis of -1

[0163] Weigh 1.52g (13.1mmol) diglycolic anhydride and 2.87g (11.9mmol) R 1 R 2 NH(R 1 , R 2 selected from isooctyl), which were dissolved in 20mL of dichloromethane organic solvent respectively; the two solutions were mixed and reacted at 25°C; during the reaction, the mixed solution gradually became clear, and when it was completely clear, the reaction Complete (about reaction 12h), make extraction agent shown in formula (I) (wherein, X 1 for -O-, R 1 and R 2 The same is isooctyl); the prepared extractant is washed with high-purity deionized water to remove impurities, and then magnesium sulfate is added to the washed product to filter to obtain a water-free product, and the processed product is rotated The organic solvent was removed by evaporating and condensing apparatus, and then dried in a vacuum oven at 75°C for 12 hours, so as to obtain a high-purity extractant. Wash the prepared extractant several time...

Embodiment 2

[0165] Embodiment 2 extractant (E 1-2 ) Synthesis of -2

[0166] Weigh 3.78g (28.2mmol) of diglycolic acid and dissolve in 20ml of acetic anhydride, heat to 140°C on a magnetic heating stirrer and stir to reflux. During the reaction, the solid gradually dissolves and the solution gradually becomes clear, and stops after 4 hours For the reaction, excess acetic anhydride and acetic acid formed by the reaction were removed by a rotary evaporator condenser, and placed in a vacuum oven at 80°C for 24 hours, and the product was diglycolic anhydride. The yield was 93%.

[0167] The above diglycolic anhydride and 2.87g (11.9mmol) R 1 R 2 NH(R 1 , R 2 selected from isooctyl), which were dissolved in 20mL of dichloromethane organic solvent respectively; the two solutions were mixed and reacted at 25°C; during the reaction, the mixed solution gradually became clear, and when it was completely clear, the reaction Complete (about reaction 12h), make extraction agent shown in formula (I...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
purityaaaaaaaaaa
purityaaaaaaaaaa
purityaaaaaaaaaa
Login to view more

Abstract

The invention discloses an extractant, an adsorbent and an impregnated adsorbent material. Utilizing the separation characteristics of the extractant, adsorbent and impregnated adsorbent material, an extraction and purification (removal) process for radioactive metal elements is developed for separation and Refined target metal. In the extractant, according to the choice of the alkyl chain, the load rate and hydrophobicity of the extractant in the organic solvent are improved, and the reusability of the extractant is correspondingly improved due to the stability of the chemical structure , to protect the environment; by controlling the separation characteristics of metals under different pH conditions, the separation and purification of radioactive metal elements, between radioactive metal elements and general metal elements, and between radioactive metal elements and rare earth metal elements can be realized. Extraction separation is of great value in industry.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation of radioactive elements, and in particular relates to an extraction agent and an adsorbent containing effective functional groups and their application in the extraction and separation of thorium metal. Background technique [0002] China's rare earth resources are not only rich in reserves, but also have a complete range of minerals and rare earth elements, and the distribution is relatively concentrated, such as iron-niobium-rare earth ore, bastnaesite, monazite, etc. However, rare earth elements often coexist or accompany radioactive elements such as thorium (Th) and uranium (U) in rare earth ores. Therefore, there are hazards such as radiation pollution and environmental pollution in the production process of rare earth metal smelting and waste storage. [0003] In modern society, rare earth metals are used in various fields such as military affairs, chemical industry, metall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C22B60/02C22B3/32
CPCC22B60/0291C22B3/32
Inventor 赵志钢杨帆
Owner 中科新镧系(厦门)科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap