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Functionalization and defunctionalization method of MOF (metal-organic framework) material LIFM-28, functionalization product and application

A metal-organic framework, LIFM-28 technology, applied in chemical instruments and methods, other chemical processes, selective adsorption, etc., can solve the problems of high cost, complex functionalization process, difficult reuse, etc. Conducive to environmental protection, to achieve the effect of recycling and reuse

Active Publication Date: 2017-07-07
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the metal-organic framework materials in the prior art, such as high cost, difficult reuse, and complicated functionalization process, and provide a functionalized and defunctionalization method

Method used

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  • Functionalization and defunctionalization method of MOF (metal-organic framework) material LIFM-28, functionalization product and application
  • Functionalization and defunctionalization method of MOF (metal-organic framework) material LIFM-28, functionalization product and application
  • Functionalization and defunctionalization method of MOF (metal-organic framework) material LIFM-28, functionalization product and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 Functionalization and defunctionalization method of LIFM-28——Preparation and defunctionalization of the methyl functionalized product LIFM-82 of LIFM-28

[0051] 1. Preparation of LIFM-82, a methyl functionalized product of LIFM-28

[0052] (1) With LIFM-28, 2-methyl-[1,1'-biphenyl]-4,4'-dicarboxylic acid and 2',5'-dimethyl-[1,1':4' ,1''-terphenyl]-4,4''-dicarboxylic acid as raw material to prepare LIFM-82, the preparation flow chart is as follows figure 1 shown.

[0053] Specifically, the preparation method of LIFM-82 includes the following steps:

[0054] S1. Combine (0.0043 mmol, 10 mg) LIFM-28, (0.0051 mmol, 1.3 mg) 2-methyl-[1,1'-biphenyl]-4,4'-dicarboxylic acid and (0.0052 mmol, 1.8 mg) of 2',5'-dimethyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid with 2.0 mL of N,N-dimethylformamide The mixed solution was filled into vials and heated in an oven at 85°C for 40 hours.

[0055] S2. Cool the vial after the reaction in step S1 to room temperature, a...

Embodiment 2

[0065] Example 2 Functionalization and defunctionalization method of LIFM-28——Preparation and defunctionalization of the methyl functionalized product LIFM-83 of LIFM-28

[0066] 1. Preparation of LIFM-83, a methyl functionalized product of LIFM-28

[0067] (1) With LIFM-28, 2-methyl-[1,1'-biphenyl]-4,4'-dicarboxylic acid and 2'-methyl-[1,1':4',1'' -Terphenyl]-4,4''-dicarboxylic acid as raw material to prepare LIMF-83, the preparation flow chart is as follows figure 1 shown.

[0068] Specifically, the preparation method of LIFM-83 includes the following steps:

[0069] S1. Combine (0.0043 mmol, 10 mg) LIFM-28, (0.0051 mmol, 1.3 mg) 2-methyl-[1,1'-biphenyl]-4,4'-dicarboxylic acid and (0.0051 mmol, 1.7 mg) Mixed solution of 2'-methyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid and 2.0mL N,N-dimethylformamide The vial was heated in an oven at 85°C for 40 hours.

[0070] S2. Cool the vial after the reaction in step S1 to room temperature, and then wash the solid with N,N-...

Embodiment 3

[0080] Example 3 Application of the functionalized product of LIFM-28

[0081] 1. Methane adsorption application of LIFM-82 and LIFM-83, the methyl functionalized products of LIFM-28

[0082] (1) The methane adsorption experiment method is as follows:

[0083] S1. Soak 50 mg LIFM-82 and LIFM-83 in 20 mL N,N-dimethylformamide for 3 days, and change N,N-dimethylformamide every 12 hours.

[0084] S2. Soak the solid in step S1 in 20 mL of anhydrous methanol for 3 days, and change the anhydrous methanol every 12 hours.

[0085] S3. Soak the solid in step S2 in 20 mL of anhydrous dichloromethane for 3 days, and change the anhydrous dichloromethane every 12 hours.

[0086] S4. The solid in S3 is heated to 100 under the condition of vacuum drying o C and kept for 10 hours to obtain activated LIFM-82 and activated LIFM-83.

[0087] S5. Use of activated LIFM-82 for methane adsorption.

[0088] (2) The adsorption results are shown in Table 1, figure 2 and image 3 shown.

[0089...

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Abstract

The invention discloses a functionalization and defunctionalization method of an MOF (metal-organic framework) material LIFM-28. For the functionalization, the LIFM-28, diphenyl dicarboxylic acid, tribiphenyl dicarboxylic acid and N,N-dimethyl formamide are uniformly mixed; after heating reaction, a functionalization product with functional groups is obtained. For the defunctionalization, the obtained functionalization product is soaked with water and is then washed with an alkaline solution and an acid N,N-dimethyl formamide solution; recycling is performed to obtain the LIFM-28. A dicarboxylic acid ligand with different functional groups is inserted into the LIFM-28 through simple hydro-thermal reaction; the material functionalization is realized; the prepared LIFM-28 functionalization product can also realize defunctionalization through simple soaking and purification; the recovery and the reutilization of the expensive LIFM-28 are realized; the use cost of an MOF is favorably reduced; the environment protection is favorably realized.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and specifically discloses a functionalization and defunctionalization method of a metal-organic framework material LIFM-28, as well as its functional product and application. Background technique [0002] At the end of the last century, metal-organic framework (MOF) began to emerge as a new type of porous material. Metal-organic frameworks are porous hybrid materials composed of inorganic metal nodes and organic bridging ligands. MOFs have great application potential in gas adsorption and separation, heterogeneous catalysis, chemical detection, biopharmaceuticals, proton transfer, drug release, and other fields. [0003] Based on a variety of metal nodes and powerful organic synthesis methods, the overall structure, pore size and shape, and functional group modification on the surface of MOFs can all be precisely regulated. However, the current metal-organic framework materials have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J20/22B01J20/30
CPCB01D15/08B01J20/226C08G83/008B01J2220/4812
Inventor 苏成勇陈成侠韦张文江继军郑少平王海平曹陈陈
Owner SUN YAT SEN UNIV