Preparation method and application of metal-organic framework material

A metal-organic framework and mass-part technology, applied in the field of inorganic and material chemistry science, can solve problems such as structural instability, and achieve the effects of low production cost, high safety factor, and cheap raw materials

Inactive Publication Date: 2017-05-24
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these metal-organic frameworks are constructed using simple carboxylic acid ligands, which usually suffer from structural instability, thus limiting their applications.

Method used

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  • Preparation method and application of metal-organic framework material
  • Preparation method and application of metal-organic framework material
  • Preparation method and application of metal-organic framework material

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0045] A method for preparing a metal-organic framework material, comprising the steps of:

[0046] 1) Add 0.029 parts by mass of cobalt nitrate hexahydrate and 0.0155 parts by mass of 5-(4-(5-tetrazolyl)phenyl)isophthalic acid into a mixed solvent of N,N-dimethylformamide and water Mixed liquid is obtained after being stirred evenly in middle, wherein:

[0047] The mixed solvent includes 3.78 parts by mass of N,N-dimethylformamide and 3 parts by mass of water;

[0048] 2) Put the mixed liquid obtained in step 1) in a closed high-pressure reactor, heat it to 105°C and keep it warm for 72 hours, and then cool it down to room temperature at a rate of 0.1°C per minute to obtain a reaction product;

[0049] 3) filtering the reaction product obtained in step 2) to obtain red blocky crystals (i.e. the initial synthesis sample of the metal organic framework),

[0050] 4) The red blocky crystal obtained in step 3) was exchanged with methanol for 60 hours, and then heated in vacuum a...

specific Embodiment 2

[0070] A method for preparing a metal-organic framework material, comprising the steps of:

[0071] 1) Add 0.029 parts by mass of cobalt nitrate hexahydrate and 0.01 parts by mass of 5-(4-(5-tetrazolyl)phenyl)isophthalic acid into a mixed solvent of N,N-dimethylformamide and water Mixed liquid is obtained after being stirred evenly in middle, wherein:

[0072] The mixed solvent includes 3.5 parts by mass of N,N-dimethylformamide and 2.5 parts by mass of water;

[0073] 2) Place the mixed solution obtained in step 1) in a closed high-pressure reactor, heat it to 100°C and keep it warm for 80 hours, and then cool it down to room temperature at a rate of 0.15°C per minute to obtain a reaction product;

[0074] 3) filter the reaction product obtained in step 2) to obtain red blocky crystals,

[0075] 4) The red bulk crystals obtained in step 3) were exchanged with methanol for 70 hours, and then heated in vacuum at 220° C. for 5 hours to obtain metal organic framework materials....

specific Embodiment 3

[0086] A method for preparing a metal-organic framework material, comprising the steps of:

[0087] 1) Add 0.029 parts by mass of cobalt nitrate hexahydrate and 0.02 parts by mass of 5-(4-(5-tetrazolyl)phenyl)isophthalic acid to a mixed solvent of N,N-dimethylformamide and water Mixed liquid is obtained after being stirred evenly in middle, wherein:

[0088] The mixed solvent comprises 4.5 parts by mass of N,N-dimethylformamide and 3.5 parts by mass of water;

[0089] 2) Put the mixed liquid obtained in step 1) in a closed high-pressure reactor, heat it to 110°C and keep it warm for 65 hours, and then cool it down to room temperature at a rate of 0.2°C per minute to obtain a reaction product;

[0090] 3) filter the reaction product obtained in step 2) to obtain red blocky crystals,

[0091]4) The red blocky crystals obtained in step 3) were exchanged with methanol for 80 hours, and then heated in vacuum at 220° C. for 7 hours to obtain a metal organic framework material.

...

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Abstract

The invention relates to a preparation method and application of a metal-organic framework material. The preparation method of the metal-organic framework material comprises the following steps: (1) adding cobalt nitrate hexahydrate and 5-(4-(5-tetrazyl) phenyl)m-phthalic acid into a mixed solvent of N,N-dimethylformamide and water, and stirring evenly to obtain mixed liquid; (2) putting the mixed liquid into an airtight high pressure reaction still, heating to 110 to 110 DEG C, preserving heat, and then cooling to room temperature to obtain a reaction product; (3) filtering the obtained reaction product to obtain a red blocky crystal; (4) exchanging the red blocky crystal with methyl alcohol, and then vacuum heating at 220 DEG C for 5 to 7 hours, thus obtaining the metal-organic framework material. The metal-organic framework material is used for selective adsorption separation on CO2 in a gas mixture of CO and the CO2.

Description

technical field [0001] The invention belongs to the field of inorganic and material chemistry sciences, and in particular relates to a preparation method and application of a metal organic framework material. Background technique [0002] Over the past few decades, carbon dioxide (CO2) released from fuel combustion 2 ) has become the main gas causing the greenhouse effect, causing serious environmental problems. [0003] CO 2 Capture and storage technology is a very important technology to reduce carbon emissions to the atmosphere, which has attracted the attention of many scientists in the world. However, due to the disadvantages of amine absorption, which is widely used in industry, such as high toxicity, strong corrosion and volatility, the research and development of more effective CO encapsulation 2 Materials have become research hotspots, such as zeolite materials, porous organic compounds and metal-organic frameworks (Metal-Organic Frameworks, MOFs). Metal-organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/06B01D53/02B01J20/22B01J20/30
CPCB01D53/02B01D2257/502B01D2257/504B01D2258/0283B01J20/226C07F15/065Y02C20/40Y02P20/151
Inventor 侯磊王海华时文娟张文彦王尧宇
Owner NORTHWEST UNIV(CN)
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