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Application of europium-based metal organic framework material as water vapor adsorption material

An organic framework and adsorption material technology, applied in the fields of metal organic framework materials, water vapor adsorption materials, and europium-based metal organic framework materials, can solve the problems of few applications, achieve simple operation, excellent adsorption capacity, and improve water adsorption capacity. Effect

Pending Publication Date: 2021-06-08
肇庆市武大环境技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are few MOFs materials with potential adsorption capacity for water vapor, and even less about their applications.

Method used

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  • Application of europium-based metal organic framework material as water vapor adsorption material
  • Application of europium-based metal organic framework material as water vapor adsorption material
  • Application of europium-based metal organic framework material as water vapor adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 0.4g H 6 TTHA, 0.6gEu(NO 3 ) 3 ·6H 2 Add O to the mixed solution of 40mL deionized water and 20mL acetonitrile, and adjust the pH value to 2 with 3mol / L hydrochloric acid solution, then add it to the polytetrafluoroethylene lining, place it in an autoclave, and place it at a constant temperature at 140°C After 48 hours, there were colorless needle-like crystals after cooling, and the crystals were washed several times with deionized water. After washing, the colorless needle-like crystals were vacuum-dried at 80°C for 24 hours to obtain the europium-based metal-organic framework material, whose molecular formula was C 15 h 38 Eu 2 N 6 o 25 , elemental analysis data, theoretical value: C, 17.9; H, 3.81; N, 8.35%. Experimental values: C, 17.55; H, 4.17; N, 8.68%.

[0039] Analyze the single crystal structure of the europium-based metal-organic framework material prepared in Example 1 of the present invention, collect the single crystal diffraction data with a Bru...

Embodiment 2

[0041] 0.4g H 6 TTHA, 0.6gEu(NO 3 ) 3 ·6H 2 O was added to the mixed solution of 40mL deionized water and 20mL acetonitrile, and the pH value was adjusted to 2 with 3mol / L hydrochloric acid solution, then added to the polytetrafluoroethylene lining, placed in an autoclave, and placed at a constant temperature at 100°C for 72h , after cooling, there are colorless needle-like crystals, which are washed with deionized water several times, and the washed colorless needle-like crystals are vacuum-dried at 80°C for 24 hours to obtain the obtained product.

Embodiment 3

[0043] 0.4g H 6 TTHA, 0.6gEu(NO 3 ) 3 ·6H 2 O was added to the mixture of 40mL deionized water and 20mL acetonitrile, and the pH value was adjusted to 0.5 with 3mol / L hydrochloric acid solution, then added to the polytetrafluoroethylene lining, placed in an autoclave, and kept at a constant temperature of 140°C for 48h , after cooling, there are colorless needle-like crystals, which are washed with deionized water several times, and the washed colorless needle-like crystals are vacuum-dried at 80°C for 24 hours to obtain the obtained product.

[0044] X-ray powder diffraction analysis was carried out on the crystal samples prepared in Examples 2 and 3 of the present invention, and the results showed that the positions of the diffraction peaks at different angles were all the same as the simulated X-ray powder diffraction peaks obtained from the single crystal in Example 1. Keeping the same shows that the same crystalline compound is obtained according to Examples 1-3. X-ra...

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Abstract

The invention discloses application of a rare earth-based metal organic framework material as a water vapor adsorption material. The rare earth-based metal organic framework material is formed by assembling Eu(NO3)3.6H2O and a ligand 1,3,5-triazine-2,4,6-triamine-hexaacetic acid (H6TTHA) through a hydrothermal synthesis method, the rare earth-based metal organic framework material is of a three-dimensional network structure, the chemical expression of the rare-earth-based metal organic framework material is {[Eu2(TTHA)(H2O)4].9H2O}n, wherein TTHA represents that H6TTHA loses an anionic group formed by six protons. The europium-based metal organic framework material shows continuously enhanced adsorption performance to water vapor, and can still keep the stability of the framework structure in a high-humidity environment, so that the europium-based metal organic framework material can be recycled for a long time and has a great application prospect.

Description

technical field [0001] The invention relates to a new application of a europium-based metal organic framework material, in particular to a metal ion with Eu(III) as the center, H 6 TTHA is a metal-organic framework material formed by the assembly of organic ligands, which is used as a water vapor adsorption material and belongs to the technical field of environmental materials. Background technique [0002] In modern society, people's lifestyles have shifted from the former open-air spaces to more enclosed indoor environments, especially in regions of extreme heat or cold. For indoor engineers, a serious challenge is how to regulate the humidity in the room. It should be noted that in the absence of reasonable control measures, such as ventilation and adsorption, the moisture in the room will accumulate, so it is easy to breed mold and other fungi. Recent studies have shown that prolonged exposure to toxic fungi can lead to allergies and infectious diseases. Appropriate a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01D53/02C08G83/00
CPCB01J20/226B01D53/02C08G83/008B01D2253/204B01D2257/80
Inventor 侯浩波冯露董祎挈曾天宇
Owner 肇庆市武大环境技术研究院
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