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Pore-diameter extension method for UiO-66 metal organic framework material and application

A metal organic framework, uio-66 technology, applied in the field of porous materials

Active Publication Date: 2018-05-29
BENGBU COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The metal-organic framework material UiO-66 has high thermal stability and acid resistance, and the material has good application prospects in gas storage, heterogeneous catalysis, selective adsorption, etc., but its pore size is about 0.7nm, so it is urgently needed A method capable of expanding the pore size of UiO-66 metal-organic framework materials

Method used

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  • Pore-diameter extension method for UiO-66 metal organic framework material and application

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Experimental program
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Effect test

Embodiment 1

[0029] The pore diameter expansion method of UiO-66 metal organic framework material, comprises the following steps:

[0030] (1) Get 2.47 parts by weight of zirconium tetrachloride powder, 1.47 parts by weight of terephthalic acid powder, and 1 part by weight of formic acid, mix them and place them in a single-port container filled with 95 parts by weight of N,N-dimethylformamide In the flask, sonicate for 10 minutes to fully dissolve;

[0031] (2) A condensing reflux device is installed on the single-necked flask, and it is placed in a microwave oven, and the microwave treatment is 15min, and the microwave power is 500W, and the first mixture is obtained and centrifuged to obtain the first solid product, and the rotating speed of centrifugation is 8000r / min, centrifugation time is 3min;

[0032] (3) Wash the first solid product with N,N-dimethylformamide and ethanol as the washing liquid. The washing method is to mix the washing liquid and the first solid product in a test...

Embodiment 2

[0037] The pore diameter expansion method of UiO-66 metal organic framework material, comprises the following steps:

[0038] (1) Take 2.47 parts by weight of zirconium tetrachloride powder and 1.47 parts by weight of terephthalic acid powder, mix them and place them in a single-necked flask filled with 95 parts by weight of N,N-dimethylformamide, and ultrasonically treat them for 10 minutes , to make it fully dissolved;

[0039] (2) A condensing reflux device is installed on the single-necked flask, and it is placed in a microwave oven. The microwave reaction is 15min, and the microwave power is 500W to obtain the first mixture and centrifuge to obtain the first solid product. The rotating speed of the centrifuge is 8000r / min, centrifugation time is 3min;

[0040] (3) Wash the first solid product with N,N-dimethylformamide and ethanol as the washing liquid. The washing method is to mix the washing liquid and the first solid product in a test tube and then place them in a ce...

Embodiment 3

[0045] The pore diameter expansion method of UiO-66 metal organic framework material, comprises the following steps:

[0046] (1) Take 2.47 parts by weight of zirconium tetrachloride powder and 1.47 parts by weight of terephthalic acid powder, mix them and place them in a single-necked flask filled with 95 parts by weight of N,N-dimethylformamide, and ultrasonically treat them for 10 minutes , to make it fully dissolved;

[0047] (2) Install a condensing reflux device on the single-necked flask, place it in a microwave oven, microwave for 15 minutes, and the microwave power is 500W to obtain the first mixture and separate it by suction to obtain the first solid product. The rotating speed of centrifugation is 8000r / min, the centrifugation time is 3min;

[0048] (3) Wash the first solid product with N,N-dimethylformamide and ethanol as the washing liquid. The washing method is to mix the washing liquid and the first solid product in a test tube and then place them in a centri...

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Abstract

The invention discloses a pore-diameter expanding method for a UiO-66 metal organic framework material. The pore-diameter expanding method comprises the following steps of: taking and mixing 2.47 parts by weight of zirconium tetrachloride, 1.47 parts by weight of terephthalic acid and 95 parts by weight of N, N-dimethyl formamide in a single-opening flask to carry out ultrasonic dissolving; putting in a microwave oven, condensing and refluxing for 15 minutes, and carrying out centrifugal separation; using alcohol and N, N-dimethyl formamide to wash a solid product, taking 1 part by weight of solid product, adding the solid product into 20 parts by weight N, N-dimethyl formamide solution with the concentration of dilute sulfuric acid being 0.25-1mol / L, stirring for 24 hours, then carrying out centrifugal separation, using N, N-dimethyl formamide and alcohol to wash, then drying in an environment with the temperature of 60-150 DEG C, then putting into a Soxhlet extractor, adopting acetone as a solvent to wash till siphoning for three times, after washing, drying for 6 hours in an environment with the temperature of 80 DEG C, and obtaining a mesoporous UiO-66 metal organic framework material. The UiO-66 metal organic framework material can be used as an absorbent to be applied to treatment of organic dyestuff wastewater.

Description

technical field [0001] The invention relates to the technical field of porous materials, in particular to a method for expanding the pore diameter of a UiO-66 metal-organic framework material and its application. Background technique [0002] Metal-organic framework materials are organic-inorganic hybrid materials constructed by metal ions or ion clusters and rigid organic ligands through ligand interaction. In recent years, metal-organic framework materials have been used in adsorption and separation, heterogeneous catalysis, and fluorescence sensing. And molecular magnets have been widely researched and applied. Metal-organic framework materials are affected by the ligand characteristics and ligand size of metal ions. Most of the reported metal-organic framework materials are porous materials with micropore size. Expanding the pore size of metal-organic framework materials will expand the Applications of materials in separation science, molecular catalysis, drug sustained...

Claims

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Application Information

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IPC IPC(8): C08G83/00C02F1/28B01J20/22C02F101/30
CPCB01J20/226C02F1/285C02F2101/308C08G83/008
Inventor 李宗群郭春燕姜绯章玲
Owner BENGBU COLLEGE
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