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A kind of ultramicroporous hydrophobic uio-66 zirconium metal organic framework material and its preparation method and application

A metal-organic framework and uio-66 technology, applied in chemical instruments and methods, other chemical processes, products, etc., can solve the problems of poor adsorption and separation performance and poor hydrophobicity, and achieve strong adsorption and separation capabilities and high temperature resistance , the effect of small particle size

Active Publication Date: 2022-06-07
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to overcome the defects and deficiencies of existing metal organic framework materials such as poor gas adsorption and separation performance and poor hydrophobicity, and provide a kind of ultramicroporous hydrophobic UiO-66 zirconium metal organic framework material, Its gas adsorption and separation performance is excellent, for C 3 h 6 / C 3 h 8 High difference in adsorption capacity, high temperature resistance, good hydrophobicity

Method used

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  • A kind of ultramicroporous hydrophobic uio-66 zirconium metal organic framework material and its preparation method and application
  • A kind of ultramicroporous hydrophobic uio-66 zirconium metal organic framework material and its preparation method and application
  • A kind of ultramicroporous hydrophobic uio-66 zirconium metal organic framework material and its preparation method and application

Examples

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Embodiment 1

[0035] An ultra-microporous hydrophobic UiO-66 zirconium metal-organic frame material prepared by coordination of trifluoromethylbenzoic acid with terephthalic acid and zirconium ions.

[0036] The preparation method of the ultraporous hydrophobic UiO-66 zirconium metal-organic framework material described above, comprising the following steps:

[0037]0.23g zirconium tetrachloride and 0.019g 2-trifluoromethylbenzoic acid were added to 60ml DMF and stirred for 2h for premixing, and then added 0.17g of terephthalic acid to the mixed liquid, stirred and dissolved for 10 min at a stirrer rotation of 300 revolutions, the resulting mixed solution was moved to a stainless steel high-pressure reactor made of PTFE, at a speed of 1.0 °C / min from room temperature to 120 °C, maintained at 120 °C for 20h, After the end of the reaction, the extract collected was washed with DMF, ethanol for 3 to 4 times, centrifuged at 8000r / min rotational speed for 3min, and the lower layer product was dried ...

Embodiment 2

[0039] An ultra-microporous hydrophobic UiO-66 zirconium metal-organic frame material prepared by coordination of trifluoromethylbenzoic acid with terephthalic acid and zirconium ions.

[0040] The above-described ultraporous hydrophobic UiO-66 zirconium metal-organic framework material is prepared in the same way as In Example 1, the difference is that 2-trifluoromethylbenzoic acid is replaced with 3-trifluoromethylbenzoic acid.

Embodiment 3

[0042] An ultra-microporous hydrophobic UiO-66 zirconium metal-organic frame material prepared by coordination of trifluoromethylbenzoic acid with terephthalic acid and zirconium ions.

[0043] The above-described ultraporous hydrophobic UiO-66 zirconium metal-organic framework material is prepared in the same way as In Example 1, the difference is that 2-trifluoromethylbenzoic acid is replaced with 4-trifluoromethylbenzoic acid.

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Abstract

The invention discloses an ultra-microporous hydrophobic UiO-66 zirconium metal-organic framework material and its preparation method and application. The ultra-microporous hydrophobic UiO-66 zirconium metal-organic framework material grafted with trifluoromethyl provided by the invention, It is prepared by coordinating organic ligands and zirconium ions. The organic ligands are trifluoromethylbenzoic acid and terephthalic acid. The present invention utilizes two ligands of trifluoromethylbenzoic acid and terephthalic acid The competitive coordination mechanism of zirconium is used to synergistically improve the zirconium-oxygen coordination ability and the chemical properties of the pore surface. The prepared ultra-microporous hydrophobic UiO-66 zirconium metal-organic framework material has good thermal stability, high temperature resistance, and high hydrophobicity; Strong adsorption and separation ability, separation C 3 h 6 / C 3 h 8 The performance is excellent.

Description

Technical field [0001] The present invention relates to the technical field of metal-organic framework materials, more particularly, to an ultra-microporous hydrophobic UiO-66 zirconium metal-organic framework material and preparation method and application thereof. Background [0002] Metal-organic frameworks (MOFs) are typically synthesized under gentle conditions through a coordination-oriented, self-assembly process, also known as metal-organic ligand networks and porous coordination polymers. Because MOFs have the advantages of high porosity, high specific surface area, adjustable pore size, adjustable metal nodes and organic ligands, they show excellent application prospects in biomedicine, gas storage, proton conduction, photoelectromagnetic catalysis and gas adsorption separation. Especially for all kinds of light hydrocarbon gas adsorption separation, it can be used to have different adsorption effects on different gases to separate gases, such as the use of Π complex be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J20/22
CPCC08G83/008B01J20/226Y02P20/151
Inventor 纪红兵韩军胡鹏王永庆
Owner SUN YAT SEN UNIV
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