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Porous metal-organic framework material, preparation method and adsorption and separation application of porous metal-organic framework material

A technology of organic framework and organic framework, which is applied in the field of adsorption and separation, and the preparation of two metal-organic frameworks, can solve the problems of increasing energy consumption and cost of the separation process, and achieve the advantages of promotion, high yield and stable framework Effect

Active Publication Date: 2019-07-16
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In most MOFs materials, olefins containing unsaturated bonds are often preferentially adsorbed, so the desired olefin products can only be obtained in the desorption stage, which increases the energy consumption and cost of the separation process

Method used

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  • Porous metal-organic framework material, preparation method and adsorption and separation application of porous metal-organic framework material
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  • Porous metal-organic framework material, preparation method and adsorption and separation application of porous metal-organic framework material

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Effect test

Embodiment 1

[0022] The organic ligand H 2 BDP (0.02 mmol) was ultrasonically dissolved in 1 ml of DMF, Co(NO 3 ) 2 ·6H 2 O or Zn(NO 3 ) 2 ·6H 2 O (0.05 mmol) was dissolved in 0.6 ml of deionized water, and after the two were mixed, 0.03 mmol of isophthalic acid and 0.5 ml of ethanol solution were added and sealed into the reaction kettle. Crystals of the metal-organic framework were obtained via thermal reaction at 130° C. for 48 hours.

Embodiment 2

[0024] The organic ligand H 2 BDP (0.02 mmol) and isophthalic acid (0.03 mmol) were dissolved in 1 ml of DMF, Co(NO 3 ) 2 ·6H 2 O or Zn(NO 3 ) 2 ·6H 2 O (0.05 mmol) was dissolved in 0.6 ml of deionized water, and after the two were mixed, 0.5 ml of ethanol solution was added and sealed into the reaction kettle. Crystals of the metal-organic framework were obtained via thermal reaction at 140° C. for 36 hours.

Embodiment 3

[0026] The organic ligand H 2 BDP (0.1 mmol) and 0.2 mmol isophthalic acid and sonication were dissolved in 5 mL of DMF solution, Co(NO 3 ) 2 ·6H 2 O or Zn(NO 3 ) 2 ·6H 2 O (0.3 mmol) was dissolved in 3 ml of deionized water, the two were mixed, 3 ml of ethanol solution was added, and sealed in a glass bottle. Crystals of the metal-organic framework were obtained via thermal reaction at 140° C. for 36 hours.

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Abstract

The invention discloses a porous metal-organic framework material, a preparation method and an adsorption and separation application of the porous metal-organic framework material, and belongs to thetechnical field of crystalline materials. The chemical formula is [M (BDP)], wherein M is Zn or Co and the organic ligand is 1, 4-bis (lH-pyrazol-4-yl) benzene (H2BDP). Under the sealing condition, the organic ligand H2BDP, isophthalic acid and cobalt nitrate hexahydrate or zinc nitrate hexahydrate are subjected to thermal reaction in a mixed solution of N, N-dimethylformamide, ethanol and water to obtain crystals of the metal-organic framework. In the structure of the metal-organic framework, benzene rings of the ligand have 'face-to-face' pi-pi action, and the ligand is arched. The materialhas a large specific surface area and a permanent pore structure, and can be used as a material for separating ethane-ethylene mixed gas from propane-propylene mixed gas.

Description

technical field [0001] The invention belongs to the technical field of crystalline materials, and the technology relates to a metal-organic coordination complex material, especially a preparation method of two metal-organic frameworks and an application of adsorption and separation. Background technique [0002] Metal-organic frameworks (MOFs) are a class of coordination network structures formed by the self-assembly of metal nodes and organic ligands through coordination bonds. MOFs have been widely used in the fields of gas adsorption and separation, catalysis, sensing, and electrochemistry due to their crystallinity, high specific surface area, and adjustable pores. With the continuous progress of industrialization, petrochemical and chemical products play an important role in the development of modern society. At present, the separation of various petroleum components is mainly through cryogenic rectification. However, due to the similar physical and chemical properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J20/22B01D53/02
CPCB01D53/02B01D2253/204B01D2257/702B01J20/226C08G83/008
Inventor 李建荣边振兴张永正
Owner BEIJING UNIV OF TECH
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