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Cesium ion adsorbent as well as preparation method and application thereof

A cesium ion and adsorbent technology, applied in the field of cesium ion adsorbent and its preparation, can solve the problems of easy solification, high selectivity and high cost, and achieve high adsorption capacity, excellent desorption and cycle performance, and high selectivity. Effect

Pending Publication Date: 2022-07-12
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the preparation method of described adsorbent is complicated, and cost is higher
[0006] The common defects in the prior art are that some materials of the inorganic adsorbent are unstable, easy to sol, and generally difficult to desorb, and most of the researches are focused on the spent fuel system in the strong radiation environment
Organic adsorbents are not resistant to radiation, the selectivity needs to be improved, and the preparation method is complicated and the cost is high

Method used

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  • Cesium ion adsorbent as well as preparation method and application thereof
  • Cesium ion adsorbent as well as preparation method and application thereof
  • Cesium ion adsorbent as well as preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0074] This embodiment provides a cesium ion adsorbent, the raw material of the cesium ion adsorbent is p-hydroxybenzyl alcohol, and the pore diameter of the cesium ion adsorbent is 2.38 nm.

[0075] The present embodiment provides a preparation method of the cesium ion adsorbent, and the specific steps include:

[0076] Under a nitrogen atmosphere, p-hydroxybenzyl alcohol (2.48g, 0.02mol) was dissolved in 50mL of dichloroethane, anhydrous ferric chloride (3.25g, 0.02mol) was added to react at 45°C for 5h, and then The reaction temperature was raised to 80°C for 19 hours; after the reaction, cooled to room temperature and suction filtered to obtain an insoluble black solid; the solid was sequentially used in 0.05mol L -1 Washed with hydrochloric acid solution for 2h, washed with ultrapure water until the filtrate was neutral, washed with methanol until the filtrate became clear, then the separated solid product was further extracted with methanol Soxhlet for 24h to remove the ...

Embodiment 2

[0078] This embodiment provides a cesium ion adsorbent, the raw material of the cesium ion adsorbent is o-hydroxybenzyl alcohol, and the pore diameter of the cesium ion adsorbent is 3.19 nm.

[0079] The present embodiment provides a preparation method of the cesium ion adsorbent, and the specific steps include:

[0080] Under a nitrogen atmosphere, o-hydroxybenzyl alcohol (2.48g, 0.02mol) was dissolved in 50mL of dichloroethane, anhydrous ferric chloride (3.25g, 0.02mol) was added to react at 45°C for 5h, and then The reaction temperature was raised to 80°C for 19 hours; after the reaction, cooled to room temperature and suction filtered to obtain an insoluble black solid; the solid was sequentially used in 0.05mol L -1 Washed with hydrochloric acid solution for 2h, washed with ultrapure water until the filtrate was neutral, washed with methanol until the filtrate became clear, then the separated solid product was further extracted with methanol Soxhlet for 24h to remove the ...

Embodiment 3

[0082] This embodiment provides a cesium ion adsorbent, the raw material of the cesium ion adsorbent is m-hydroxybenzyl alcohol, and the pore diameter of the cesium ion adsorbent is 3.91 nm.

[0083] The present embodiment provides a preparation method of the cesium ion adsorbent, and the specific steps include:

[0084] Under nitrogen atmosphere, m-hydroxybenzyl alcohol (2.48g, 0.02mol) was dissolved in 50mL of dichloroethane, anhydrous ferric chloride (3.25g, 0.02mol) was added to react at 45°C for 5h, and then The reaction temperature was raised to 80°C for 19 hours; after the reaction, cooled to room temperature and suction filtered to obtain an insoluble black solid; the solid was sequentially used in 0.05mol L -1 Washed with hydrochloric acid solution for 2h, washed with ultrapure water until the filtrate was neutral, washed with methanol until the filtrate became clear, then the separated solid product was further extracted with methanol Soxhlet for 24h to remove the re...

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Abstract

The invention provides a cesium ion adsorbent as well as a preparation method and application thereof. Raw materials of the cesium ion adsorbent comprise monomers containing phenolic hydroxyl groups. The preparation method of the cesium ion adsorbent provided by the invention comprises the step of carrying out Friedel-Crafts alkylation reaction on a monomer containing a phenolic hydroxyl group to obtain the cesium ion adsorbent. According to the cesium ion adsorbent provided by the invention, the monomer containing the phenolic hydroxyl group is selected to form the super-crosslinked polymer, so that the cesium ion adsorbent has high selectivity and high adsorption capacity on cesium ions, has excellent cycle performance, can realize rapid desorption, and is simple in preparation process, environment-friendly and suitable for industrial production, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of adsorption and separation materials, and in particular relates to a cesium ion adsorbent and a preparation method and application thereof. Background technique [0002] Cesium is an important strategic resource. Due to its special physical and chemical properties, it has been widely used in high-tech fields such as energy, medicine, aerospace, catalysis, optoelectronic communications, and oil and gas drilling. [0003] my country has abundant metal resources, including cesium, in salt lake brines in Qinghai, Tibet and Sichuan. Although the total amount of cesium stored in salt lake brine is high, it mostly exists in the form of ions (Cs + ), low concentration (less than 40mg L -1 ), and contains a variety of associated ions, especially the physical and chemical properties of Cs + Very close potassium ions are extremely difficult to separate and extract. At present, there is no successful industrialized...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D15/00B01J20/28C01D17/00
CPCB01J20/262B01J20/28083B01D15/00C01D17/00Y02P10/20
Inventor 杨良嵘徐自豪戎猛邢慧芳孟启宇吴霞刘会洲
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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