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Amino functionalization modification method of metal organic framework MIL-101

A metal-organic framework and amino functionalization technology, applied in the field of metal-organic framework modification, can solve the problems of complicated steps and difficult modification conditions, and achieve the effect of simple preparation operation, easy preparation conditions and uniform crystal structure

Active Publication Date: 2019-12-06
河南圣玛斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the functional modification methods used in the prior art have the problems of complicated steps or difficult modification conditions. Therefore, it is necessary to propose a modification method with relatively simple operation and modification conditions.

Method used

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  • Amino functionalization modification method of metal organic framework MIL-101
  • Amino functionalization modification method of metal organic framework MIL-101
  • Amino functionalization modification method of metal organic framework MIL-101

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1.1 Preparation of MIL-101:

[0027] Weigh 2g of 4-nitroimidazole, 4g of terephthalic acid, and 4g of chromium nitrate nonahydrate, and dissolve them in quantitative deionized water successively. In this embodiment, take 70ml of deionized water as an example, and stir at room temperature until completely Dissolve; then transfer the prepared mixed solution into a stainless steel reaction kettle with a liner, and crystallize in a drying oven at 150°C for 5 days; close the drying oven after crystallization, and cool to room temperature naturally; then the reaction kettle The mixed solution in the mixture was centrifuged at 10,000 rpm for 10 minutes; after the centrifugation was completed, the separated solid was collected and dried in a drying oven at 50°C to obtain MIL-101;

[0028] 1.2 Amino functionalization of MIL-101:

[0029] Grind the prepared MIL-101 into powder; then weigh 0.3g MIL-101 and put it into a beaker, add 15ml of ultrapure water to the beaker, put the b...

Embodiment 2

[0032] The amination process is the same as in Example 1, but the amount of aminotrimethoxysilane coupling agent in this example is 0.08ml, thus finally obtaining NH 2 -MIL-101-APS-0.08-24;

Embodiment 3

[0034] The amination process is the same as the above example, but in this example, the amount of MIL-101 is 0.5g, and the corresponding amount of ultrapure water is 30ml; the amount of aminotrimethoxysilane coupling agent is 0.1ml, thus finally obtaining NH 2 -MIL-101-APS-0.1-24;

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Abstract

The invention belongs to the technical field of modification of metal organic frameworks, and discloses an amino functionalization modification method of a metal organic framework MIL-101. The methodspecifically comprises: S1) preparing MIL-101; S2) grinding the MIL-101; S3) weighing the MIL-101 grinding powder and ultrapure water, placing into a beaker, and mixing; S4) carrying out ultrasonic dispersion on the mixed solution, adding an amino coupling agent after the dispersion, and uniformly stirring; S5) placing the mixed solution formed in the step S4) into a three-neck flask, and performing reflux treatment; S6) carrying out centrifugal treatment on the refluxed reaction liquid, and separating the precipitate obtained by the reaction in the reaction liquid; and S7) drying the precipitate to obtain a synthetic product of NH2-MIL-101. According to the present invention, with the method, the grafting between the amino group and the skeleton MIL-101 can be effectively achieved, and the functionalization modification of the metal organic skeleton MIL-101 is completed on the basis of the retaining of the original skeleton structure; and the integral modification method has advantages of easy achievement of preparation conditions and simple and convenient preparation operation.

Description

technical field [0001] The invention belongs to the technical field of metal-organic framework modification, and in particular relates to an amino functional modification method of metal-organic framework MIL-101. Background technique [0002] Metal-organic frameworks are a new type of crystalline porous materials with periodic infinite topology formed by metal ions or metal clusters and organic ligands through coordination bonds. Metal-organic frameworks have high porosity, large specific surface area, and diverse structures. advantage; [0003] According to the existing technology, introducing functional groups into the metal-organic framework in a certain way to construct a functional metal-organic framework can improve the performance of the metal-organic framework; [0004] However, most of the functional modification methods used in the prior art have the problems of complicated steps or difficult modification conditions. Therefore, it is necessary to propose a modifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 陈恒李兵刘云鹏
Owner 河南圣玛斯科技有限公司