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A kind of crown ether immobilized glass fiber material and preparation method thereof

A glass fiber and crown ether technology is applied in the field of crown ether immobilized glass fiber material and its preparation. Simple and convenient effects

Active Publication Date: 2020-03-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the content of crown ether functional groups is low, resulting in less adsorption of lithium isotopes and poor separation effect of lithium isotopes; secondly, the introduction of macrocyclic crown ether molecules reduces the specific surface area of ​​the matrix material and even causes pore blockage, which seriously affects The mass transfer process of lithium isotopes has a slow kinetic rate; in addition, the matrix materials used at this stage are mostly resins, mesoporous silica and other materials, and some resins have low mechanical strength and poor stability

Method used

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  • A kind of crown ether immobilized glass fiber material and preparation method thereof
  • A kind of crown ether immobilized glass fiber material and preparation method thereof
  • A kind of crown ether immobilized glass fiber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Cut 2×4cm 2 Add the original glass fiber mat to the Tris salt solution of 2g / L dopamine, shake at constant temperature for 24h, wash and dry repeatedly with deionized water and ethanol; put the above glass fiber mat material in 60mL DMF, add 1.5mL triethyl ether Add 1.5mL of 2-bromoisobutyryl bromide under the protection of inert gas, react at room temperature for 12h, wash and dry repeatedly with DMF and ethanol; put the above glass fiber mat material in 3.0mL of anisole, add 3.0mL of methyl Glycidyl acrylate, 33.0 μL ethyl 2-bromoisobutyrate and 740 μL azobisisobutyronitrile in DMF (concentration 1.0 mg / L), under the protection of an inert gas atmosphere, add 1.0 mL copper bromide and tris DMF solution of (2-dipicolylmethyl)amine (concentrations of the two are 1.0 and 3.0mg / L respectively), 60 ℃ oil bath for 24h, THF, DMF and ethanol repeatedly washed and dried; the above-mentioned glass fiber mat material was placed in 4-Aminobenzo15-crown-5 in DMF solution (concent...

Embodiment 2

[0038] Cut 2×4cm 2 Add the original glass fiber mat to the Tris salt solution of 2g / L dopamine, shake at constant temperature for 24h, wash and dry repeatedly with deionized water and ethanol; put the above glass fiber mat material in 60mL DMF, add 1.5mL triethyl ether Add 1.5mL of 2-bromoisobutyryl bromide under the protection of inert gas, react at room temperature for 12h, wash and dry repeatedly with DMF and ethanol; put the above glass fiber mat material in 3.0mL of anisole, add 3.0mL of methyl Glycidyl acrylate, 33.0 μL ethyl 2-bromoisobutyrate and 1.0 mL ascorbic acid in DMF (concentration 3.97 mg / L), under the protection of an inert gas atmosphere, add 1.0 mL copper bromide and pentamethyldiethylene The DMF solution of triamine (both concentrations are 1.0 and 2.3mg / L respectively), 60 ℃ oil bath 24h, THF, DMF and ethanol wash repeatedly and dry; Crown-5 in DMF solution (concentration: 25g / L), reflux reaction at 70°C for 6h, repeated washing with DMF and ethanol, and ...

Embodiment 3

[0040] Cut 2×4cm 2 Add the original glass fiber mat to the Tris salt solution of 2g / L dopamine, shake at constant temperature for 24h, wash and dry repeatedly with deionized water and ethanol; put the above glass fiber mat material in 60mL DMF, add 1.5mL triethyl ether Add 1.5mL of 2-bromoisobutyryl bromide under the protection of inert gas, react at room temperature for 12h, wash and dry repeatedly with DMF and ethanol; put the above glass fiber mat material in 3.0mL of anisole, add 3.0mL of methyl Glycidyl acrylate, 33.0 μL ethyl 2-bromoisobutyrate and 740 μL azobisisobutyronitrile in DMF (concentration 1.0 mg / L), under the protection of an inert gas atmosphere, add 1.0 mL copper bromide and tris DMF solution of (2-dipicolylmethyl)amine (concentrations of the two are 1.0 and 3.0mg / L respectively), 60 ℃ oil bath for 24h, THF, DMF and ethanol repeatedly washed and dried; the above-mentioned glass fiber mat material was placed in 4-Aminobenzo-18-crown-6 in DMF solution (concen...

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Abstract

The invention relates to a crown ether immobilized glass fiber material and a preparation method thereof. A side chain of the crown ether contains an amino group, the diameter of the glass fiber is 4-10 microns, and the surface of the glass fiber comprises acrylic and epoxy groups; a mass ratio of the glass fiber to the crown ether is (5-10):1. The method disclosed by the invention is simple and convenient to operate and high in practicality, the obtained material has controllable crown ether supporting rate, and the original form of the glass fiber is maintained after synthesis.

Description

technical field [0001] The invention belongs to the technical field of ion adsorption materials, in particular to a crown ether immobilized glass fiber material and a preparation method thereof. Background technique [0002] The element lithium occurs in nature 6 Li and 7 There are two stable isotopes of Li, whose abundances are 7.5% and 92.5%, respectively. 6 Li and 7 Li is an important resource for nuclear fusion reaction (Equation 1-1). There is almost no tritium (T) required for nuclear fusion reactions in nature, but it can be obtained by 6 Li is produced by neutron bombardment (Equation 1-2). 7 Li is used as the core coolant and heat transfer agent of nuclear fusion reactors. [0003] D(deuterium)+T(tritium)→He+n+17.6MeV formula (1-1) [0004] 6 Li+n→T+ 4 He+4.8MeV formula (1-2) [0005] Lithium isotope separation into isotopes of elemental lithium 6 Li and 7 The separation process of Li is the key to the development of nuclear fusion energy, which is relat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D59/26
CPCB01D59/26B01J20/22B01J20/28023
Inventor 王文庆帕孜丽亚·居来提叶钢陈靖
Owner TSINGHUA UNIV
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