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High stability copper-based metal-organic framework material and its preparation method and application

A high stability, organic framework technology, applied in the field of material science, can solve the problems of difficult practical application and limited force, and achieve the effect of intact appearance and structure, high structural stability, and poor selectivity

Inactive Publication Date: 2018-06-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chelation of metal ions and carboxylic acid groups usually results in non-polar MOFs pores, which make their interaction with guest molecules very limited, making it difficult to put into practical applications.

Method used

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  • High stability copper-based metal-organic framework material and its preparation method and application
  • High stability copper-based metal-organic framework material and its preparation method and application
  • High stability copper-based metal-organic framework material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 material [Cu (4,4 '-bpy) 2 (1,2-eds)] n The synthesis and performance investigation of

[0034] Material [Cu(4,4'-bpy) 2 (1,2-eds)] n Synthesis:

[0035] Weigh 0.48g copper nitrate trihydrate, 0.47g disodium 1,2-ethanedisulfonate, dissolve them in 15mL water; weigh 0.31g 4,4'-bipyridine, put them into the above solution, and The turbid liquid was treated in an ultrasonic oscillator for 30 minutes to make it evenly mixed; the uniform suspension was transferred to a high-pressure reactor with a volume of 25 mL and sealed well, and placed in an oven with a constant temperature of 140 ° C for 60 hours; the reaction was completed Finally, the oven temperature was lowered to room temperature at a rate of 10°C / hour; the autoclave was taken out and opened, and the resulting solid crystalline product was transferred to a beaker, washed with 10mL of water and 10mL of ethanol in turn, and dried to obtain the material.

[0036] The properties of the material obtai...

Embodiment 2

[0041] Embodiment 2 material [Cu (4,4 '-bpy) 2 (1,2-eds)] n Synthesis

[0042] Weigh 0.10g copper nitrate monohydrate, 0.10g disodium 1,2-ethanedisulfonate, dissolve them in 10mL water; weigh 0.10g 4,4'-bipyridyl, put them into the above solution, and The turbid solution was stirred on a magnetic stirrer for 10 minutes to disperse evenly; the uniform suspension was transferred to a high-pressure reactor with a volume of 15mL and sealed well, and placed in an oven at 175°C for 72 hours; after the reaction , the temperature of the oven was lowered to room temperature at a rate of 5° C. / hour; the autoclave was taken out and opened, and the resulting solid crystalline product was transferred to a beaker, washed twice with 20 mL of ethanol and then dried to obtain the material. The properties of the material obtained in this embodiment are dark blue blocky crystals.

Embodiment 3

[0043] Embodiment 3 material [Cu (4,4 '-bpy) 2 (1,2-eds)] n Synthesis

[0044] The chemical formula of the copper-based metal-organic framework material in this example is [Cu(4,4'-bpy) 2 (1,2-eds)] n , where 4,4'-bpy is 4,4'-bipyridine, 1,2-eds is 1,2-ethanedisulfonate dianion, n is any positive integer; the material is dark blue block crystals.

[0045] The preparation method of the high-stability copper-based metal-organic framework material in this embodiment specifically includes the following steps:

[0046] (1) adding anhydrous copper nitrate and disodium 1,2-ethanedisulfonate to water to obtain a clear solution;

[0047] (2) Add 4,4'-bipyridine to the clarified solution of step (1), and fully mix to obtain a uniform suspension;

[0048] (3) transferring the homogeneous suspension obtained in step (2) to an airtight reaction vessel for hydrothermal reaction;

[0049] (4) After the hydrothermal reaction is finished, cool to room temperature, and precipitate dark blu...

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Abstract

The invention relates to a high-stability copper-based metal-organic framework material and a preparation method and application thereof. The chemical formula of the material is [Cu(4,4'-bpy)2(1,2-eds)]n, wherein 4,4'-bpy is 4,4'-dipyridyl, and 1,2-eds is a 1,2-ethane disulfonic acid root bivalent anion; the crystal structure of the material is a monoclinic system; the space group is C2, and copper in a crystal lattice is divalent hexa-coordination; the material is a dark blue bulk crystal or sky blue powder. The material is prepared by performing reaction on the 4,4'-dipyridyl and ethane disulfonic acid disodium under a hydrothermal condition of 140 to 180 DEG C and further performing purification; the material can be used for absorption, separation and conversion of carbon dioxide. Compared with the prior art, the high-stability copper-based metal-organic framework material overcomes the shortcomings of low stability of a conventional carboxylic acids metal-organic framework material and low object molecular selectivity, and has a potential application value in the field of absorption, separation and conversion of the carbon dioxide.

Description

technical field [0001] The invention belongs to the field of material science and technology, and relates to a high-stability copper-based metal-organic framework material and its preparation method and application. Background technique [0002] Metal-organic frameworks (MOFs) are a class of porous crystalline organic-inorganic hybrid materials. The regular pores in their structure can capture guest molecules and catalyze their participation in chemical reactions under specific conditions. MOFs have a multi-dimensional topological structure jointly constructed by metal ions or metal cluster groups and organic ligands. Compared with other traditional solid-state porous materials, MOFs have extremely high specific surface area and functional organic ligand components. By finely designing the functional groups on the surface of the pores, the interaction force between MOFs and guest gas molecules can be greatly enhanced. At present, MOFs have been preliminarily commercialized ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F1/08B01J31/22B01J20/22B01J20/30B01D53/02
CPCB01D53/02B01D2257/504B01D2258/06B01J20/226B01J31/226B01J2531/0213B01J2531/0241B01J2531/16C07F1/005C07F1/08Y02C20/40
Inventor 费泓涵张贵阳
Owner TONGJI UNIV
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