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Polynuclear cobalt cluster metal organic framework material based on two-end pyrazole ligands and application

An organic framework and ligand technology, applied in organic chemistry, adsorption purification/separation, etc., can solve the problem of low adsorption selectivity and achieve the effect of good chemical stability

Active Publication Date: 2021-04-02
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption selectivity of existing porous materials for important industrial mixtures is low, and it is still difficult to efficiently separate and purify under mild conditions

Method used

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  • Polynuclear cobalt cluster metal organic framework material based on two-end pyrazole ligands and application
  • Polynuclear cobalt cluster metal organic framework material based on two-end pyrazole ligands and application
  • Polynuclear cobalt cluster metal organic framework material based on two-end pyrazole ligands and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh Ligand H 2 BPZ-Pd(0.06mmoL) and Co(NO 3 ) 2 ·6H 2 O (0.12mmoL) was put into a 20mL beaker, and 10mL of DMF solution and 2mL of deionized water were added, and then the beaker was placed into an ultrasonic instrument, and ultrasonicated at room temperature for 5 minutes, and the solution was transferred to a 20mL polytetrafluoroethylene ethylene reactor. After sealing, the reaction kettle was placed in an oven at 110° C. for 24 hours to react. Close the oven after the reaction is over, open the reactor after being cooled to room temperature, filter the product obtained in the reactor to collect solid particles, and the product obtained is washed with DMF, H 2 Washed with O and EtOH (5mL×3), observed under a microscope to obtain yellow octahedral crystals (Co 8 (OH) 4 (OH 2 ) 2 (BPZ-Pd) 6 ), (yield: 43%, based on H 2 BPZ-Pd ligand).

Embodiment 2

[0023] Weigh Ligand H 2 BPZ-Pz(0.06mmoL) and Co(NO 3 ) 2 ·6H 2 O (0.12mmoL) was put into a 20mL beaker, 10mL of DMF solution and 2.5mL of deionized water were added, and then the beaker was placed into an ultrasonic instrument, and ultrasonicated at room temperature for 5 minutes. Vinyl fluoride reactor. After sealing, the reaction kettle was placed in an oven at 105° C. for 48 hours to react. Close the oven after the reaction is over, open the reactor after being cooled to room temperature, filter the product obtained in the reactor to collect solid particles, and the product obtained is washed with DMF, H 2 Washed with O and EtOH (5mL×3), observed under a microscope to obtain yellow octahedral crystals (Co 8 (OH) 4 (OH 2 ) 2 (BPZ-Pz) 6 ), (yield: 49%, based on H 2 BPZ-Pz ligand).

Embodiment 3

[0025] Weigh Ligand H 2 BPZ-Pm(0.06mmoL) and Co(NO 3 ) 2 ·6H 2 O (0.12mmoL) was put into a 20mL beaker, 10mL of DMF solution and 0.5mL of deionized water were added, and then the beaker was put into an ultrasonic instrument, and ultrasonicated at room temperature for 5 minutes. Vinyl fluoride reactor. After sealing, the reaction kettle was placed in an oven at 120° C. for 48 hours to react. Close the oven after the reaction is over, open the reactor after being cooled to room temperature, filter the product obtained in the reactor to collect solid particles, and the product obtained is washed with DMF, H 2 Washed with O and EtOH (5mL×3), observed under a microscope to obtain yellow octahedral crystals (Co 8 (OH) 4 (OH 2 ) 2 (BPZ-Pm) 6 ), (yield: 37%, based on H 2 BPZ-Pm ligand).

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Abstract

The invention discloses a polynuclear cobalt cluster metal organic framework material based on two-end pyrazole ligands and application, and belongs to the technical field of crystalline materials. The chemical formula is [Co8 (OH) 4 (OH2) 2 (BPZ-X) 6], H2BPZ-X is aryl di (1H-pyrazole), X represents an aromatic ring, and X = Pd, Pz and Pm, which are pyridazinyl, pyrazinyl and pyrimidinyl respectively. The synthesis conditions of the metal organic framework are as follows: in a closed environment, an organic ligand aryl di (1H-pyrazole) (H2BPZ-X) and cobalt nitrate are subjected to a solvothermal reaction in a mixed solution of N, N-dimethylformamide and water to obtain a crystal of a metal organic framework material; and the metal organic framework material shows separation performance onpropylene / propyne 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 polymer material, which is characterized in a metal-organic framework material of a class of polynuclear cobalt clusters, a preparation method thereof and a study on the separation performance of low-carbon hydrocarbons. Background technique [0002] Metal-organic frameworks, or MOFs for short, are formed by connecting metal ions or metal clusters with organic ligands through coordination bonds. Compared with traditional porous materials such as zeolite and activated carbon, MOF has the characteristics of diverse structures, high order, good designability, and easy functionalization. It has broad application prospects in many research fields such as gas storage, separation, catalysis, and sensing. [0003] The pore size and pore surface of MOFs can be controlled, and can be used for the separation of alkanes. It can also be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C07C7/12C07C11/06C07C11/22
CPCC08G83/008C07C7/12C07C11/06C07C11/22
Inventor 李建荣何涛孔祥婧司广锐
Owner BEIJING UNIV OF TECH
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