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Preparation and Application of a Hierarchical Porous Cu-Based Metal-Organic Framework

An organic framework and metal-based technology, which is applied in the field of preparation of multi-level porous Cu-based metal-organic framework materials, can solve the problems of skeleton structure collapse and complex process, and achieve simple operation, high adsorption capacity, rich micropores and mesopores structure effect

Active Publication Date: 2020-09-08
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method not only needs to select a suitable templating agent, but also the process is complicated, and the removal of the templating agent may lead to the collapse of the skeleton structure (D.Bradshaw, et al., Supramolecular templating of hierarchically porous metal-organic frameworks.Chemical Society Reviews, 2014, 43 ,5431–5443)

Method used

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  • Preparation and Application of a Hierarchical Porous Cu-Based Metal-Organic Framework
  • Preparation and Application of a Hierarchical Porous Cu-Based Metal-Organic Framework
  • Preparation and Application of a Hierarchical Porous Cu-Based Metal-Organic Framework

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Effect test

Embodiment 1

[0027] 1.208g Cu(NO 3 ) 2 ·3H 2 O and 0.841g trimesic acid were dissolved in 36mL DMF, stirred at room temperature for 15min, and then 0.270g FeCl was added 3 ·6H 2 O, continue to stir at room temperature for 10 minutes, transfer the resulting mixed solution into a stainless steel autoclave, heat at 110 ° C for 21 h, and carry out solvothermal synthesis. After vacuum drying for 10 h, the hierarchically porous Cu-based MOF sample A was obtained.

Embodiment 2

[0029] 1.268g Cu(NO 3 ) 2 ·3H 2 O and 0.841g trimesic acid were dissolved in 40mL DMF, stirred at room temperature for 20min, and then 0.202g FeCl was added 3 ·6H 2 O, continue to stir at room temperature for 20 minutes, transfer the resulting mixed solution into a stainless steel autoclave, heat at 120 ° C for 20 h, and carry out solvothermal synthesis. After vacuum drying for 10 h, the hierarchically porous Cu-based MOF sample B was obtained.

Embodiment 3

[0031] 1.087g Cu(NO 3 ) 2 ·3H 2 O and 0.841g trimesic acid were dissolved in 40mL DMF, stirred at room temperature for 20min, then added 0.405g FeCl 3 ·6H 2 O, continue to stir at room temperature for 20 minutes, transfer the resulting mixed solution into a stainless steel autoclave, heat at 110 ° C for 20 h, and carry out solvothermal synthesis. After vacuum drying for 10 h, the hierarchically porous Cu-based MOF sample C was obtained.

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Abstract

The invention belongs to the technical field of hierarchical porous metal-organic frameworks, and concretely discloses a preparation method and an application of a hierarchical porous Cu-based metal-organic framework material. The preparation method of the material comprises the following steps: dissolving Cu(NO3)2.3H2O and trimesic acid in dimethylformamide, and performing stirring to obtain a solution; adding FeCl3.6H2O, and continuously performing stirring; transferring the uniformly mixed solution into a stainless steel high-pressure reactor, and carrying out solvothermal synthesis; and centrifuging the obtained reaction product, washing the reaction product with ethanol, and carrying out vacuum drying to obtain the hierarchical porous Cu-based metal-organic framework material. The method only needs to add the metal salt FeCl3.6H2O, and has a simple process, and the product has a large specific surface area and abundant pores, has two kinds of pores of micro-pores and meso-pores, and has a good application prospect in adsorption separation.

Description

technical field [0001] The invention belongs to the field of preparation of a hierarchical porous metal organic framework, and in particular relates to the preparation and application of a hierarchical porous Cu-based metal organic framework material. Background technique [0002] Metal Organic Frameworks (MOFs for short) is a new type of porous framework material, which is a zeolite-like framework material mainly composed of metal ions and organic ligands self-assembled. MOFs have the advantages of ultra-high specific surface area and adjustable pore structure, which make them show great potential application prospects in gas storage, adsorption separation and catalysis. But most MOFs (such as HKUST-1, made of Cu 2+ Porous materials formed by self-assembly of trimesic acid and trimesic acid) only have a microporous structure, which limits molecular diffusion and hinders macromolecules from entering the pores, thus limiting the application of MOFs materials (C.X.Duan, et al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J20/22B01D53/02B01J20/28B01J20/30
CPCB01D53/02B01D2257/7027B01J20/226B01J20/28066B01J20/28073C08G83/008
Inventor 孙雪娇吴启辉陈文杰连小兵林伟民程佳鹏吴婷婷
Owner QUANZHOU NORMAL UNIV