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A kind of macroporous carbon and its synthesis method

A synthesis method and technology of macroporous carbon, which are applied in the fields of carbon compounds, chemical instruments and methods, carbon preparation/purification, etc., can solve the problems of uneven distribution of material pores, time-consuming template assembly, and difficult industrial production, etc. Uniform distribution, low production costs and high repeatability

Active Publication Date: 2020-09-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Combining the above analysis, it can be seen that the existing preparation methods of macroporous carbon materials still have problems such as long template assembly time, high preparation cost, difficulty in industrial production, uneven pore distribution of the material, and poor physical and chemical properties.

Method used

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  • A kind of macroporous carbon and its synthesis method
  • A kind of macroporous carbon and its synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] (1) Dissolve 0.4g of sodium hydroxide in 40mL of 25wt% TEAOH and 10mL of distilled water, and stir for 30min. Then add 0.7g of sodium aluminate and stir for 30min. Add 12g of white carbon black slowly, and stir for 30min. Then put it into a closed reaction kettle, and crystallize it in an oven at 140°C for 30h. Then the obtained product was washed with distilled water until neutral, and then dried at 120° C. for 12 hours to obtain a Beta molecular sieve.

[0043] (2) Put the Beta molecular sieve obtained in step (1) into 50 mL of 50wt% propylene glycol solution and allow it to settle naturally. When the molecular sieve has just settled to the bottom, take out 1 / 3 of the solution in the middle of the entire solution and filter it. Dry at 120°C for 10h.

[0044] (3) Mix the Beta molecular sieve obtained in step (2) with 5mL of 10wt% sodium benzoate solution, sonicate for 20min, the frequency of the ultrasonic wave is 0.01MHz, and the power is 20W / L according to the vol...

Embodiment 2

[0050] (1) Dissolve 0.14g of sodium hydroxide in 40mL of 25wt% TEAOH and 10mL of distilled water, and stir for 30min. Then add 0.7g of sodium aluminate and stir for 30min. Add 12g of white carbon black slowly, and stir for 30min. Then put it into a closed reactor and crystallize in an oven at 160°C for 20h. Then the obtained product was washed with distilled water until neutral, and then dried at 120° C. for 12 hours to obtain a Beta molecular sieve.

[0051] (2) Put the Beta molecular sieve obtained in step (1) into 50 mL of 70wt% propylene glycol solution and allow it to settle naturally. When the molecular sieve has just settled to the bottom, take out 1 / 5 of the solution in the middle of the entire solution and filter it. Dry at 120°C for 10h.

[0052] (3) Mix the Beta molecular sieve obtained in step (2) with 5mL of 15wt% sodium benzoate solution, ultrasonically treat for 20min, the frequency of ultrasonic wave is 1.2MHz, and the power is 100W / L according to the soluti...

Embodiment 3

[0058] (1) Dissolve 1 g of sodium hydroxide in 30 mL of 25 wt % TEAOH and 15 mL of distilled water, and stir for 30 min. Then add 1g of sodium aluminate and stir for 30min. Add 10g of white carbon black slowly, and stir for 30min. Then put it into a closed reactor and crystallize in an oven at 105°C for 50 h. Then the obtained product was washed with distilled water until neutral, and then dried at 120° C. for 12 hours to obtain a Beta molecular sieve.

[0059] (2) Put the Beta molecular sieve obtained in step (1) into 80mL of 10wt% propylene glycol solution, and let it settle naturally. When the molecular sieve has just settled to the bottom, take out 1 / 7 of the solution in the middle of the whole solution, filter, and 120 ℃ dry 10h.

[0060] (3) Mix the Beta molecular sieve obtained in step (2) with 5mL of 10wt% sodium benzoate solution, and ultrasonically treat it for 20min. Dry under conditions for 12h.

[0061] (4) Add 0.2g of the Beta molecular sieve obtained in ste...

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Abstract

The invention provides macroporous carbon and a synthesis method thereof, wherein the macroporous carbon comprises amorphous carbon, and has two-level pore channels. The synthesis method comprises: screening a Beta molecular sieve; placing the Beta molecular sieve in a sodium benzoate solution, and treating; mixing the Beta molecular sieve, saccharide and water, and carrying out stirring ultrasonic treatment; carrying out drying treatment and high temperature treatment; and finally treating in an alkali solution to obtain the macroporous carbon material. According to the present invention, with the method, the expensive organic additives are not used, and the prepared macroporous carbon material has uniform pore size distribution.

Description

technical field [0001] The invention belongs to the field of synthesis of porous inorganic materials, in particular to a macroporous carbon and a synthesis method thereof. Background technique [0002] According to the classification of the International Union of Pure and Applied Chemistry, porous materials can be divided into three categories: macroporous materials (direct>50nm), mesoporous materials (2nm≤direct≤50nm) and microporous materials (direct<2nm). Since microporous materials and mesoporous materials have been successfully applied in the fields of industrial catalysis and separation, they have always been a hot spot in research and application. In recent years, as macroporous materials have made up for the shortcomings of small-pore molecular sieves and mesoporous materials in the field of macromolecular catalysis and separation, and it is difficult to allow macromolecules to enter the interior of the channel, as well as the advantages of other physical and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/00C01B32/05
Inventor 范峰凌凤香张会成王少军杨春雁
Owner CHINA PETROLEUM & CHEM CORP