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Preparation method and application of micropore/mesopore/macropore composite pore iron-cobalt bimetallic organic framework material

An organic framework, bimetallic technology, applied in the field of adsorption catalyst preparation, can solve the problems of poor adsorption and catalysis performance of the preparation material, complicated and cumbersome preparation methods, time-consuming and laborious, etc., and achieves excellent adsorption and catalytic performance, good application prospects, and repeatability. Actionable effect

Active Publication Date: 2020-10-16
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inventors found that the current bimetallic organic framework materials still have problems such as complex and cumbersome preparation methods, time-consuming and labor-intensive preparation materials, and poor performance such as adsorption and catalysis.

Method used

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  • Preparation method and application of micropore/mesopore/macropore composite pore iron-cobalt bimetallic organic framework material
  • Preparation method and application of micropore/mesopore/macropore composite pore iron-cobalt bimetallic organic framework material
  • Preparation method and application of micropore/mesopore/macropore composite pore iron-cobalt bimetallic organic framework material

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preparation example Construction

[0034] In view of this, in a specific embodiment of the present invention, a method for preparing a microporous / mesoporous / macroporous composite porous iron-cobalt bimetallic organic framework material is provided, the preparation method comprising:

[0035] S1, dissolving iron salt and cobalt salt into mixed solvent 1 and performing ultrasonic heating treatment to obtain mixed solution A;

[0036] S2, dissolving the pore forming agent and the organic ligand in the mixed solvent 2 and performing ultrasonic heating treatment to obtain a mixed solution B;

[0037] S3, adding the mixed solution B into the mixed solution A, and performing ultrasonic heating treatment to obtain the mixed solution C;

[0038] S4. Perform microwave low-temperature and low-pressure treatment on the mixed solution C; obtain the solid product after purification to obtain the microporous / mesoporous / macroporous composite porous iron-cobalt bimetallic organic framework adsorption material.

[0039] In yet...

Embodiment 1

[0068] A preparation method of FeCo-MOFs-1, a microporous / mesoporous / macroporous composite porous iron-cobalt bimetallic MOFs adsorption catalyst, comprising the following steps:

[0069] (1) Mix the solvent N,N-dimethylformamide (50mL), ethanol (25mL), and deionized water (25mL) to form a mixed solvent;

[0070] (2) Dissolve ferric nitrate nonahydrate (10mmol), hexahydrate and cobalt nitrate (2mmol) in the mixed solvent of step (1), under the action of ultrasonic power 2kW, frequency 40khz, continue heating in a water bath at 70°C, and stir for 800 rpm / min, the stirring time is 30min, until there is no precipitation, the mixed solution is obtained, which is recorded as solution A;

[0071] (3) The pore-forming agent N,N-dimethyldodecylamine (2.74mmol) and the organic ligand trimesic acid (6.86mmol) were dissolved in N,N-dimethylformamide (75mL) and In a mixed solvent of ethanol (25mL), under the action of ultrasonic power of 2kW and frequency of 40khz, continue heating in a...

Embodiment 2

[0078] A method for preparing a microporous / mesoporous / macroporous composite porous iron-cobalt bimetallic MOFs adsorption catalyst FeCo-MOFs-2, comprising the following steps:

[0079] (1) Mix the solvent N,N-dimethylformamide (75mL), ethanol (25mL), and deionized water (25mL) to form a mixed solvent;

[0080] (2) Ferric chloride hexahydrate (10mmol), hexahydrate and cobalt chloride (1mmol) are dissolved in the mixed solvent of step (1), under the action of ultrasonic power 1.5kW, frequency 40khz, continue heating in a water bath at 60°C, Stir at 700 rev / min for 20 min until there is no precipitation to obtain a mixed solution, which is denoted as solution A;

[0081] (3) The pore-forming agent N,N-dimethyltetradecylamine (1.23mmol) and the organic ligand trimesic acid (6.14mmol) were dissolved in N,N-dimethylformamide (75mL) and In a mixed solvent of ethanol (25mL), under the action of ultrasonic power of 1.5kW and frequency of 40khz, continue to heat in a water bath at 60°...

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Abstract

The invention discloses a preparation method and application of a micropore / mesopore / macropore composite pore iron-cobalt bimetallic organic framework material, and belongs to the technical field of adsorption catalyst preparation. Low-temperature and low-pressure solvothermal reaction conditions are formed by utilizing high-energy microwave radiation; a composite pore structure with micropores, mesopores and macropores is rapidly synthesized; and a MOFs material has an iron-cobalt bimetal node. The problems of mass transfer and diffusion of macromolecular substances are effectively solved; the adsorption catalytic reaction activity of the MOFs material is improved, meanwhile, the raw materials used in the preparation method are low in price and environmentally friendly, the synthesized FeCo-MOFs material is non-toxic and harmless, stable in performance and high in yield, industrialization can be achieved, and therefore the FeCo-MOFs material has a practical application value.

Description

technical field [0001] The invention belongs to the technical field of preparation of adsorption catalysts, and in particular relates to a preparation method and application of a microporous / mesoporous / macroporous composite porous iron-cobalt bimetallic organic framework material. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Metal-organic frameworks (Metal-Organic Frameworks, MOFs) is a new type of porous framework material that has developed very rapidly in recent years. It is a three-dimensional network framework crystal material formed by self-assembly of metal ions or metal clusters and organic ligands. MOFs have huge specific surface area and high porosity, adjust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01J31/22B01J35/10C07C13/40C07C5/03
CPCB01J20/226B01J20/28004B01J20/3078B01J31/1691B01J31/223C07C5/03B01J2531/842B01J2531/845B01J35/618C07C13/40
Inventor 高岩张文科曹清豆华巍陈宝明李辉张林华周守军
Owner SHANDONG JIANZHU UNIV
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