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Boron and nitrogen codoped mesoporous carbon based catalyst as well as preparation method and application thereof

A mesoporous carbon and co-doping technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of high price of diamond, limit the application of boron-doped diamond electrodes, etc., and achieve simple operation, low cost, and raw material conversion rate. high effect

Active Publication Date: 2019-01-01
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high price of diamond limits the application of boron-doped diamond electrodes.

Method used

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  • Boron and nitrogen codoped mesoporous carbon based catalyst as well as preparation method and application thereof
  • Boron and nitrogen codoped mesoporous carbon based catalyst as well as preparation method and application thereof
  • Boron and nitrogen codoped mesoporous carbon based catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of catalysts based on boron and nitrogen co-doped mesoporous carbon:

[0038] (1) Dissolve 2.0g of block copolymer P123, 0.2g of boron oxide and 0.2g of melamine in 20g of methanol, add 10g of phenolic resin, add 15g of N-butylpyridine tetrafluoroborate, stir for 30min, at room temperature After volatilizing the methanol for 5 hours, the compound was cured in a normal pressure oven at 50°C for 12 hours, and then cured in a normal pressure oven at 100°C for 12 hours to obtain a cured product;

[0039](2) The cured product obtained in step (1) is ball milled. The method is: put the cured product into a ball mill tank, and add 6 small balls (2 with a diameter of 1.2cm, 2 with a diameter of 0.7cm, and 2 with a diameter of 0.5cm) , at a rotation speed of 50r / min and a revolution speed of 100r / min, grind for 0.5h to obtain a powdery product;

[0040] (3) Roasting the powdered product of step (2), the method is: under an ammonia atmosphere, put the powdered produc...

Embodiment 2

[0044] Preparation of catalysts based on boron and nitrogen co-doped mesoporous carbon:

[0045] (1) Dissolve 3.0g of block copolymer P103, 0.5g of boron nitride and 0.5g of dicyandiamide in 30g of ethanol, add 20g of polyester resin, add 10g of 1-pentyl-3-methylimidazole tetra Fluoroborate, stirred for 40 minutes, after volatilizing ethanol at room temperature for 7 hours, the compound was cured in a 70°C normal pressure oven for 14 hours, and then cured in a 120°C normal pressure oven for 14 hours to obtain a cured product;

[0046] (2) Ball mill the cured product of step (1), the method is: put the cured product into a ball mill tank, add 12 small balls (4 with a diameter of 1.2cm, 4 with a diameter of 0.7cm, and 4 with a diameter of 0.5cm ), grind for 1 hour at a rotation speed of 70r / min and a revolution speed of 140r / min to obtain a powdery product;

[0047] (4) (3) Roasting the powdered product of step (2), the method is: under a nitrogen atmosphere, the powdered produ...

Embodiment 3

[0051] Preparation of catalysts based on boron and nitrogen co-doped mesoporous carbon:

[0052] (1) Dissolve 4.0g of block copolymer P85, 0.7g of boric acid and 0.7g of urea in 40g of isopropanol, add 30g of polyamide resin, add 20g of 1-hexyl-3-methylimidazolium tetrafluoroborate, and stir After 50 minutes, isopropanol was volatilized at room temperature for 9 hours, the compound was cured in a 90°C normal pressure oven for 16 hours, and then cured in a 130°C normal pressure oven for 16 hours to obtain a cured product;

[0053] (2) Ball mill the cured product of step (1), the method is: put the cured product into a ball mill tank, add 18 small balls (6 with a diameter of 1.2cm, 6 with a diameter of 0.7cm, and 6 with a diameter of 0.5cm ), grinding for 1.5h at a rotation speed of 100r / min and a revolution speed of 200r / min to obtain a powdery product;

[0054] (3) Roasting the powdered product of step (2), the method is: under an argon atmosphere, the powdered product is pla...

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Abstract

The invention discloses a boron and nitrogen codoped mesoporous carbon based catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps of 1) dissolving 2.0 g to 8.0 g of block copolymer, 0.2 g to 4.0 g of boron-containing compound and 0.2 g to 4.0 g of nitrogen-containing compound in 20 g to 80 g of organic solvent, adding 10 g to 60 g of resin, adding 10 g to 30 g of boron-containing ionic liquid, agitating for 30 min to 60 min, volatilizing the organic solvent for 5 h to 20 h at a room temperature, then putting in an atmospheric-pressure baking oven at 50 DEG C to 150 DEG C to cure for 12 h to 36 h, then putting in the atmospheric-pressure baking oven at 100 DEG C to 200 DEG C to cure for 12 h to 36 h, so as to obtain a cured product, ball-milling the cured product, so as to obtain a powdery product, and then roasting, so as to obtain the boron and nitrogen codoped mesoporous carbon based catalyst. The catalyst obtained bythe preparation method is of a mesoporous structure, has a larger specific surface area, a relatively large aperture and a regular porous structure, and is used for electrolyzing water for preparing ozone; the cost is lower; the electrolytic process is green and pollution-free, and is easy to control; the diffusion of a molecule O3 is facilitated; as the O3 is extremely easily decomposed, the diffusion of the O3 is quickened; and the yield of the O3 is increased.

Description

technical field [0001] The invention relates to a catalyst based on boron and nitrogen co-doped mesoporous carbon, its preparation method and application. Background technique [0002] o 3 It is an important strong oxidizing agent, widely used in water treatment, chemical industry, petroleum, textile, food, fragrance and pharmaceutical industries, as well as air disinfection, sterilization and other fields. It is a good "green disinfectant". In recent years, with the improvement of people's living standards, the awareness of environmental protection has been continuously enhanced, O 3 more and more people's attention and attention. [0003] Currently, synthetic O 3 The method is mainly the high-frequency high-voltage corona discharge method, which needs to use oxygen or air that has been pretreated by compression and drying. The investment cost is high, and the ozone concentration produced is low. nitrogen oxides (NOx). In addition, radio frequency noise will be generat...

Claims

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Application Information

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IPC IPC(8): C25B1/13C25B11/06
CPCC25B1/13C25B11/091
Inventor 钟兴张悄悄王建国
Owner ZHEJIANG UNIV OF TECH
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