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Defect type covalent triazine framework material derivative material catalyst and preparation method and application thereof

A technology of covalent triazine and framework materials, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems that the catalytic activity of catalysts needs to be improved, and achieve good catalytic cycle stability and high Effect of low specific surface area and cost

Active Publication Date: 2019-08-02
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, there are few studies on the application of carbon-nitrogen materials based on covalent triazine covalently derived catalysts for electrocatalysis, and the catalytic activity of such catalysts needs to be improved.

Method used

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  • Defect type covalent triazine framework material derivative material catalyst and preparation method and application thereof
  • Defect type covalent triazine framework material derivative material catalyst and preparation method and application thereof
  • Defect type covalent triazine framework material derivative material catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Dissolve 0.64g of terephthalonitrile and 0.64g of 2,6-pyridinedicarbonitrile in 60mL of dichloromethane organic solvent, stir and fully dissolve at room temperature to obtain a dispersion;

[0035] 2) Put the dispersion liquid obtained in step 1) into a round bottom flask, set it in an oil bath, add 10mL of trifluoromethanesulfonic acid, heat to reflux, and stir at 60°C for 40h. After the reaction, put The reaction solution was cooled to room temperature;

[0036]3) Pour the cooled reaction solution in step 2) into a beaker containing 200mL of ultrapure water, and use a pipette to add concentrated ammonia water (the concentration of concentrated ammonia water is 0.5mol / L) drop by drop to adjust the pH value of the solution to 7. Suction filtration is then carried out, and the filter residue is washed with dichloromethane, ultrapure water and ethanol in sequence, and dried in vacuum to finally obtain the defective covalent triazine framework carrier material powder; ...

Embodiment 2

[0043] 1) Dissolve 0.64g of terephthalonitrile and 0.64g of 2,6-pyridinedicarbonitrile in 60mL of dichloromethane organic solvent, stir and fully dissolve at room temperature to obtain a dispersion;

[0044] 2) Put the dispersion obtained in step 1) in a round bottom flask, put it in an oil bath, add 10mL of trifluoromethanesulfonic acid, heat to reflux, and stir at 60°C for 40h. After the reaction, put The reaction solution was cooled to room temperature;

[0045] 3) Pour the cooled reaction solution in step 2) into a beaker containing 200mL of ultrapure water, and use a pipette to add concentrated ammonia water (the concentration of concentrated ammonia water is 0.5mol / L) drop by drop to adjust the pH value of the solution to 7. Suction filtration is then carried out, and the filter cake is washed with dichloromethane, ultrapure water and ethanol in sequence, and dried in vacuum to finally obtain the defective covalent triazine framework carrier material powder;

[0046] 4)...

Embodiment 3

[0049] 1) Dissolve 0.64g of terephthalonitrile and 0.64g of 2,6-pyridinedicarbonitrile in 60mL of dichloromethane organic solvent, stir and fully dissolve at room temperature to obtain a dispersion;

[0050] 2) Put the dispersion obtained in step 1) in a round bottom flask, put it in an oil bath, add 10mL of trifluoromethanesulfonic acid, heat to reflux, and stir at 60°C for 40h. After the reaction, put The reaction solution was cooled to room temperature;

[0051] 3) Pour the cooled reaction solution in step 2) into a beaker containing 200mL of ultrapure water, and use a pipette to add concentrated ammonia water (the concentration of concentrated ammonia water is 0.5mol / L) drop by drop to adjust the pH value of the solution to 7. Suction filtration is then carried out, and the filter cake is washed with dichloromethane, ultrapure water and ethanol in sequence, and dried in vacuum to finally obtain the defective covalent triazine framework carrier material powder;

[0052] 4)...

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Abstract

The invention discloses a defect type covalent triazine framework material derivative material catalyst and a preparation method and application thereof. A preparation process of the catalyst comprises the following steps: dissolving a benzonitrile compound and a pyridine derivative in a first organic solvent; adding strong acid, carrying out heating and refluxing reaction under the condition of oil bath; cooling to the room temperature after the reaction is finished, and pouring a cooled reaction solution into ultrapure water; adjusting the pH to be neutral by adding alkali, and carrying outsuction filtration; washing filter residues, and then drying the filter residues to obtain defect type covalent triazine framework carrier powder; placing the obtained powder, a cyano derivative and ruthenium metal salt into a mortar; adding absolute ethyl alcohol, and uniformly grinding until the absolute ethyl alcohol is completely volatilized; drying, and then carrying out high temperature calcination under protection of inert gas; and washing and drying the calcined product with ultrapure water to obtain the defect type covalent triazine framework material derivative material catalyst. Thecatalyst has a high specific surface area and a porous structure, supported ruthenium metal particles are small, the metal ion dispersity is high, and a catalytic hydrogen evolution reaction effect is good.

Description

technical field [0001] The invention relates to a defect-type covalent triazine frame material derived material catalyst and its preparation method and application. Background technique [0002] At present, with the continuous reduction of fossil fuels and the increasingly serious environmental pollution, human beings must find and develop new renewable energy sources. Hydrogen is clean, sustainable and renewable, making it an ideal alternative. Electrochemical water splitting has the advantages of low cost and high efficiency, and is a promising method for producing high-purity hydrogen. However, the practical application of water splitting for large-scale hydrogen production has been greatly hindered due to the large overpotential required for the two half-reactions (hydrogen evolution reaction and oxygen evolution reaction) in electrochemical water splitting. Among the new energy sources, the fuel cell is also a good new energy source. It is a power generation device th...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/10C25B11/06C25B1/04
CPCB01J27/24C25B11/04C25B1/04B01J35/394B01J35/33B01J35/61Y02E60/36
Inventor 庄桂林高旭王建国
Owner ZHEJIANG UNIV OF TECH
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