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Cationic type covalent triazine framework material, preparation method and application thereof in iodine adsorption

A covalent triazine skeleton, cationic technology, used in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of rare ionic CTFs material preparation and performance research.

Active Publication Date: 2019-07-26
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the reported CTFs materials, the preparation and performance research of ionic CTFs materials are relatively rare.

Method used

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  • Cationic type covalent triazine framework material, preparation method and application thereof in iodine adsorption
  • Cationic type covalent triazine framework material, preparation method and application thereof in iodine adsorption
  • Cationic type covalent triazine framework material, preparation method and application thereof in iodine adsorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1 (preparation of CTF-1-Cl)

[0060] 1) Add 123mg of 1,3-bis(4-cyanophenyl)-1H-imidazolium-3-ammonium chloride and 273mg of zinc chloride into a quartz ampoule (3cm×12cm), and the molar ratio is 1: 5;

[0061] 2) Remove moisture and air in the ampoule under vacuum, and seal the ampoule;

[0062] 3) The ampoule is placed in a muffle furnace, the temperature is controlled at 400°C, and the reaction time is 48h;

[0063] 4) The ampoule is cooled down to room temperature, the tube is opened, and the reaction mixture is thoroughly washed with water to remove most of the zinc chloride, then further stirred in dilute HCl for 15 hours to remove residual salt, and then carried out with tetrahydrofuran and acetone respectively. Soxhlet extraction, removal of remaining impurities, and finally drying under vacuum gave CTF-1-Cl.

Embodiment 2

[0064] Embodiment 2 (preparation of CTF-2-Cl)

[0065] 1) Add 92mg of 1,3-bis(4-cyanophenyl)-1H-imidazolium-3-ammonium chloride and 409mg of zinc chloride into a quartz ampoule (3cm×12cm), and the molar ratio is 1: 10;

[0066] 2) Remove moisture and air in the ampoule under vacuum, and seal the ampoule;

[0067] 3) The ampoule is placed in a muffle furnace, the temperature is controlled at 400°C, and the reaction time is 48h;

[0068] 4) The ampoule is cooled down to room temperature, the tube is opened, and the reaction mixture is thoroughly washed with water to remove most of the zinc chloride, then further stirred in dilute HCl for 15 hours to remove residual salt, and then carried out with tetrahydrofuran and acetone respectively. Soxhlet extraction, removal of remaining impurities, and finally drying under vacuum gave CTF-2-Cl.

Embodiment 3

[0069] Embodiment 3 (preparation CTF-3-PF)

[0070] 1) Add 143mg of 1,3-bis(4-cyanophenyl)-1H-imidazolium-3-ammonium hexafluorophosphate and 273mg of zinc chloride into a quartz ampoule (3cm×12cm), and the molar ratio is 1 :5;

[0071] 2) Remove moisture and air in the ampoule under vacuum, and seal the ampoule;

[0072] 3) The ampoule is placed in a muffle furnace, the temperature is controlled at 400°C, and the reaction time is 48h;

[0073] 4) The ampoule is cooled down to room temperature, the tube is opened, and the reaction mixture is thoroughly washed with water to remove most of the zinc chloride, then further stirred in dilute HCl for 15 hours to remove residual salt, and then carried out with tetrahydrofuran and acetone respectively. Soxhlet extraction, removal of remaining impurities, and finally drying under vacuum yielded CTF-3-PF.

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Abstract

The invention discloses a cationic type covalent triazine framework material, a preparation method and an application thereof in iodine adsorption, and belongs to the technical field of porous organicpolymer materials. The invention aims to provide the efficient cationic type covalent triazine framework material and the preparation method thereof. The method includes, firstly, preparing two monomers of 1,3-bis (4-cyanophenyl)-1H-imidazole-3-ammonium chloride and 1,3-bis (4-cyanophenyl)-1H-imidazole-3-ammonium hexafluorophosphate; and further polymerizing on the basis of the monomers to obtain the cationic type covalent triazine framework material. The material has the characteristics of permanent pore structure, high specific surface area, good chemical and thermodynamic stability, strong iodine adsorption capacity, low requirements on instruments and equipment, simple synthesis process, strong repeatability and the like.

Description

technical field [0001] The invention belongs to the technical field of porous organic polymer materials. Background technique [0002] Porous organic polymer (POPs) material is a new type of porous material that utilizes light elements such as C, H, O, N, and B to connect through the interaction of covalent bonds. This special skeleton structure makes POPs materials have good thermal and chemical stability, low density, high specific surface area and other characteristics. Compared with traditional organic-inorganic hybrid materials, zeolites, molecular sieves, metal-organic frameworks and other materials, POPs materials constructed by robust covalent bonds (C-C, C-N, C-O) have light weight, diverse structures, and pore diameter sizes. There are many advantages such as controllability and surface modification. Therefore, POPs materials show great potential in many fields such as heterogeneous catalysis, optics, gas separation and storage, especially in physical adsorption ...

Claims

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Application Information

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IPC IPC(8): C08G73/06B01J20/26C02F1/28B01J20/30C02F101/12
CPCB01J20/262C02F1/285C02F2101/12C08G73/0644C08G73/065
Inventor 徐广娟张姝然孙晓磊谢伟许彦红
Owner JILIN NORMAL UNIV
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