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Preparation method of magnetic carbon-based lithium ion imprinted material

A technology of ion imprinting and carbon-based lithium, which is applied in chemical instruments and methods, water/sludge/sewage treatment, adsorption water/sewage treatment, etc., can solve the problem that imprinted materials are not easy to separate and recover, and achieve easy separation and recovery, Solve the difficulty of lithium resources and the effect of good adsorption performance

Inactive Publication Date: 2019-08-02
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the imprinted material after adsorbing lithium ions is not easy to separate and recover from water.

Method used

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  • Preparation method of magnetic carbon-based lithium ion imprinted material
  • Preparation method of magnetic carbon-based lithium ion imprinted material
  • Preparation method of magnetic carbon-based lithium ion imprinted material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 40 mL of absolute ethanol and 20 mL of deionized water into a three-neck flask, sequentially add 300 mg of magnetic carbon spheres, 2 mL of γ-methacryloxypropyltrimethoxysilane, and 4 mL of glacial acetic acid, and ultrasonically disperse for 10 minutes to obtain a suspension.

[0042]Under stirring, the above suspension was heated to 65°C for 4 h, stopped heating, cooled to room temperature, filtered with a Buchner funnel, and washed the filter cake with 200 mL of absolute ethanol. The filter cake was collected and dried at 60° C. for 12 hours to prepare silanized magnetic carbon spheres.

[0043] Weigh 100 mg of silanized magnetic carbon spheres, 3.6 mg of azobisisobutyronitrile, and 693 mg of methacrylic acid into a three-necked flask, then add 30 mL of acetonitrile, and disperse by ultrasonication for 10 min. Under stirring, it was heated to 65°C for 5 hours, then the reaction was stopped and cooled to room temperature.

[0044] Add 40 mL of absolute ethanol to...

Embodiment 2

[0056] Add 20 mL of absolute ethanol and 10 mL of deionized water into a three-neck flask, sequentially add 300 mg of magnetic carbon spheres, 2 mL of γ-methacryloxypropyltrimethoxysilane, and 4 mL of glacial acetic acid, and ultrasonically disperse for 10 minutes to obtain a suspension.

[0057] Under stirring, the above suspension was heated to 70°C for 2 h, stopped heating, cooled to room temperature, filtered with a Buchner funnel, and washed the filter cake with 200 mL of absolute ethanol. The filter cake was collected and dried at 50° C. for 24 hours to prepare silanized magnetic carbon spheres.

[0058] Weigh 100 mg of silanized magnetic carbon spheres, 4 mg of azobisisobutyronitrile, and 716 mg of methacrylic acid into a three-necked flask, then add 30 mL of acetonitrile, and ultrasonically disperse for 10 min. Under stirring, it was heated to 65°C for 4 hours, then the reaction was stopped and cooled to room temperature.

[0059] Add 40 mL of absolute ethanol to the ...

Embodiment 3

[0067] Add 40 mL of absolute ethanol and 20 mL of deionized water into a three-neck flask, sequentially add 300 mg of magnetic carbon spheres, 2 mL of γ-methacryloxypropyltrimethoxysilane, and 5 mL of glacial acetic acid, and ultrasonically disperse for 10 minutes to obtain a suspension.

[0068] Under stirring, the above suspension was heated to 60°C for 4 h, stopped heating, cooled to room temperature, filtered with a Buchner funnel, and washed the filter cake with 200 mL of absolute ethanol. The filter cake was collected and dried at 60° C. for 24 hours to prepare silanized magnetic carbon spheres.

[0069] Weigh 100 mg of silanized magnetic carbon spheres, 3.8 mg of azobisisobutyronitrile, and 700 mg of methacrylic acid into a three-necked flask, then add 30 mL of acetonitrile, and ultrasonically disperse for 10 min. Under stirring, heat to 60°C for 5h, stop the reaction, and cool to room temperature.

[0070] Add 40 mL of absolute ethanol to the reaction product, wash wi...

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Abstract

The invention discloses a preparation method of a magnetic carbon-based lithium ion imprinted material. Magnetic carbon spheres used as a carrier material are grafted with a lithium complex of 2-hydroxymethyl-12-crown ether-4 after surface silylation modification and methacrylic acid surface functionalization treatment, crosslinking polymerization is performed with ethylene glycol dimethacrylate,lithium ions are removed by acid pickling, and the material is prepared. The prepared magnetic carbon-based lithium ion imprinted material can be used as an adsorbent to adsorb lithium ions in water,has good lithium ion adsorption performance and can be separated and recovered from water easily.

Description

technical field [0001] The invention belongs to the technical field of preparation of surface ion imprinted materials, and in particular relates to a preparation method of carbon-based lithium ion imprinted materials. Background technique [0002] Lithium is the metal with the smallest density. It is silvery white and soft. It has many chemical and physical properties different from other metal elements, such as extremely high electrochemical activity, specific heat capacity, redox potential, etc. It is known as "the energy that promotes the progress of the world." Metal". In recent years, with the rapid development of industries such as nuclear power, aerospace, and lithium electric vehicles, the global demand for lithium products has increased year by year. Lithium exists in nature mainly in two forms: solid ore and liquid ore. The proven global lithium resources are about 39.5 million tons, of which my country's proven reserves are 5.4 million tons. According to statis...

Claims

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Application Information

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IPC IPC(8): C08F285/00C08F292/00C08J9/26B01J20/26C02F1/28B01J20/30
CPCB01J20/268C02F1/285C08F285/00C08F292/00C08J9/26C08J2351/00
Inventor 杨永珍梁琦刘伟峰刘旭光张二辉安卓琳闫光赵宏
Owner TAIYUAN UNIV OF TECH
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