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Anti-humidity mof-5 compound, preparation method and application

A MOF-5 and compound technology, applied in the field of MOFs compounds, can solve the problems of easy moisture absorption and decomposition, restricting the practical application of MOF-5, etc., and achieve the effects of simple preparation method, significant moisture resistance, and high specific surface area.

Inactive Publication Date: 2020-04-21
LIAONING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structural framework of MOF-5 is very sensitive to water molecules, so it is easy to absorb moisture and decompose in the air, which seriously restricts the practical application of MOF-5.
In addition, so far there is no report about the function of MOF-5 compounds to adsorb iodine molecules

Method used

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  • Anti-humidity mof-5 compound, preparation method and application
  • Anti-humidity mof-5 compound, preparation method and application
  • Anti-humidity mof-5 compound, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] a. Mix 10mmol 1-(2-naphthyl)-1,3-butanedione (1-(naphthalen-2-yl) butane-1,3-dione), 10mmol carbon disulfide, 60mmol anhydrous potassium carbonate and 10mL N , N-dimethylformamide (DMF) was placed in a three-necked flask, stirred at room temperature for 30 minutes, added 20 mmol ethyl bromoacetate in an ice bath, and reacted for 6 hours in a water bath at 30°C;

[0017] b. Pour the reaction solution into ice water again, separate the solid, and recrystallize with ethyl acetate to obtain the recrystallized solid;

[0018] c. The obtained recrystallized solid is hydrolyzed in a solution of KOH-dissolved ethanol, the pH value is adjusted to 2, suction filtered and dried to obtain 3-(2-naphthyl)-4-methylthiophene[2 ,3-b]thiophene-2,5-dicarboxylic acid (3-(2-naphthyl)-4-methylthieno[2,3-b]thiophene-2,5-dicarboxylic acid);

[0019] d. Mix 0.1mmol 3-(2-naphthyl)-4-methylthiophene[2,3-b]thiophene-2,5-dicarboxylic acid with 0.6mmol zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) Dissolve...

Embodiment 2

[0021] a. Mix 10mmol 1-(2-naphthyl)-1,3-butanedione (1-(naphthalen-2-yl) butane-1,3-dione), 10mmol carbon disulfide, 60mmol anhydrous potassium carbonate and 10mL N , N-dimethylformamide (DMF) was placed in a three-necked flask, stirred at room temperature for 30 minutes, added 20 mmol ethyl bromoacetate in an ice bath, and reacted for 4 hours in a water bath at 30°C;

[0022] b. Pour the reaction solution into ice water, separate the solid, and recrystallize with ethanol to obtain the recrystallized solid;

[0023] c. The obtained recrystallized solid is hydrolyzed in a solution of KOH-dissolved ethanol, the pH value is adjusted to 2, suction filtered and dried to obtain 3-(2-naphthyl)-4-methylthiophene[2 ,3-b]thiophene-2,5-dicarboxylic acid (3-(2-naphthyl)-4-methylthieno[2,3-b]thiophene-2,5-dicarboxylic acid);

[0024] d. Mix 0.1mmol 3-(2-naphthyl)-4-methylthiophene[2,3-b]thiophene-2,5-dicarboxylic acid with 0.6mmol zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) Dissolved in 10mL N,...

Embodiment 3

[0026] a. Mix 10mmol 1-(2-naphthyl)-1,3-butanedione (1-(naphthalen-2-yl) butane-1,3-dione), 10mmol carbon disulfide, 60mmol anhydrous potassium carbonate and 10mL N , N-dimethylformamide (DMF) was placed in a three-necked flask, stirred at room temperature for 30 minutes, added 20 mmol ethyl bromoacetate in an ice bath, and reacted for 10 hours at 30°C in a water bath;

[0027] b. Pour the reaction solution into ice water again, separate the solid, and recrystallize with ethyl acetate to obtain the recrystallized solid;

[0028] c. Hydrolyze the resulting recrystallized solid in an aqueous solution of KOH, adjust the pH to 2, filter with suction and dry to obtain 3-(2-naphthyl)-4-methylthiophene[2,3 -b]thiophene-2,5-dicarboxylic acid (3-(2-naphthyl)-4-methylthieno[2,3-b]thiophene-2,5-dicarboxylic acid);

[0029] d. Mix 0.1mmol 3-(2-naphthyl)-4-methylthiophene[2,3-b]thiophene-2,5-dicarboxylic acid with 0.6mmol zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) Dissolved in 10mL N,N-dimethy...

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Abstract

The invention discloses an anti-moisture MOF-5-like compound, which is characterized in that the MOF-5-like compound is constructed by 3-(2-naphthyl)-4-methylthieno[2,3-b]thiophene-2,5-dicarboxylic acid and Zn<2+>. A preparation method is simple and the cost is low. As a hydrophobic aryl group forms a hydrophobic environment around a Zn4O structural unit, such MOF-5-like compound also has obvious moisture resistance and has quite high practical application value on the premise of having higher specific surface area and porosity. Meanwhile, the MOF-5-like compound provided by the invention has the performance of adsorbing an iodine molecule, can be further recycled, and can be applied to the treatment of an iodine polluted environment.

Description

technical field [0001] The invention relates to a MOFs compound, especially a moisture-resistant MOF-5 compound, a preparation method and an application. Background technique [0002] MOFs S Compounds are metal-organic framework materials constructed from organic ligands and inorganic metal units, which have the advantages of large specific surface area, large pores, diverse structural compositions, and good thermal stability. The MOF-5 compound is composed of terephthalic acid (H 2 BDC) and Zn 2+ As a classic metal-organic framework compound, it has the characteristics of high specific surface area and high porosity, and has shown broad application prospects in the fields of energy storage, molecular selective absorption and separation, catalyst loading and drug delivery. However, the structural framework of MOF-5 is very sensitive to water molecules, so it is easy to absorb moisture and decompose in the air, which seriously restricts the practical application of MOF-5. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J20/22B01J20/30
CPCB01J20/226C08G83/008
Inventor 姜春杰杨广生刘雪婷程聪闫俐宏王晓慧
Owner LIAONING NORMAL UNIVERSITY