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Preparation method of carbon-based catalyst for hydrogen peroxide preparation and carbon-based catalyst

A technology of carbon-based catalyst and hydrogen peroxide, which is applied in the direction of electrolysis process, electrolysis components, electrodes, etc., can solve the problems of unsatisfactory, high preparation cost, and low preparation efficiency, and achieve improved production efficiency, low preparation cost, and high catalytic performance. active effect

Active Publication Date: 2022-04-22
清华苏州环境创新研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation technology of this method is immature, the preparation cost is high, the preparation method is complicated, etc., and the preparation efficiency is low, which cannot meet the industrial demand for mass production of hydrogen peroxide.

Method used

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  • Preparation method of carbon-based catalyst for hydrogen peroxide preparation and carbon-based catalyst
  • Preparation method of carbon-based catalyst for hydrogen peroxide preparation and carbon-based catalyst
  • Preparation method of carbon-based catalyst for hydrogen peroxide preparation and carbon-based catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0063] 1) After mixing 0.5g of vacuum residue with 20mL of toluene and 5g of NaCl, the mixture was ultrasonically treated for 30min.

[0064] 2) The toluene is removed by vacuum distillation, and the toluene is recovered and reused.

[0065] 3) Put the blend of the vacuum residue after removing toluene and sodium chloride into the carbonization reaction furnace, heat the reaction furnace, and under the condition that the carbonization temperature reaches 700 ° C, feed 0.05 L / Min nitrogen atmosphere carbonization 2h.

[0066]4) After the carbonization process is over, when the temperature drops to 500°C, feed 0.05L / min N into the reaction furnace 2 and 0.01L / min O 2 , until the temperature in the furnace dropped to 25°C, a mixture of carbon product and NaCl was obtained.

[0067] 5) Washing the mixture in step 4) with water to remove sodium chloride to obtain a carbon-based catalyst. Also, the aqueous solution of sodium chloride can be recycled.

Embodiment 2

[0069] 1) After mixing 1g of vacuum residue with 40mL of toluene and 20g of NaCl, ultrasonically treat it for 30min.

[0070] 2) The toluene is removed by vacuum distillation, and the toluene is recovered and reused.

[0071] 3) Put the blend of the vacuum residue after removing toluene and sodium chloride into the carbonization reaction furnace, heat the reaction furnace, and under the condition that the carbonization temperature reaches 800 ° C, feed 0.05 L / Min nitrogen atmosphere carbonization 2h.

[0072] 4) After the carbonization process is over, when the temperature drops to 550°C, feed 0.05L / min N into the reaction furnace 2 and 0.01L / min O 2 , until the temperature in the furnace dropped to 25°C, a mixture of carbon product and NaCl was obtained.

[0073] 5) Washing the mixture in step 4) with water to remove sodium chloride to obtain a carbon-based catalyst. Also, the aqueous solution of sodium chloride can be recycled.

Embodiment 3

[0075] 1) After mixing 0.8g of vacuum residue with 30mL of toluene and 10g of NaCl, ultrasonic treatment was performed for 30min.

[0076] 2) The toluene is removed by vacuum distillation, and the toluene is recovered and reused.

[0077] 3) Put the blend of the vacuum residue after removing toluene and sodium chloride into the carbonization reaction furnace, heat the reaction furnace, and under the condition that the carbonization temperature reaches 750°C, feed 0.05L / Min nitrogen atmosphere carbonization 2h.

[0078] 4) After the carbonization process is over, when the temperature drops to 520°C, feed 0.05L / min N into the reaction furnace 2 and 0.01L / min O 2 , until the temperature in the furnace dropped to 25°C, a mixture of carbon product and NaCl was obtained.

[0079] 5) Washing the mixture in step 4) with water to remove sodium chloride to obtain a carbon-based catalyst. Also, the aqueous solution of sodium chloride can be recycled.

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Abstract

The invention provides a method for preparing a carbon-based catalyst for hydrogen peroxide preparation and the carbon-based catalyst. The method comprises: ultrasonically treating a mixed solution of vacuum residue, toluene and salts; removing the ultrasonically treated mixed solution Toluene in the toluene; heat the mixture of the vacuum residue after removing the toluene and the salt substance, and control the carbonization temperature between 500-1000°C, and carry out carbonization treatment on the vacuum residue in a nitrogen atmosphere, Wherein, the carbonization temperature is lower than the melting point of the salt substance; after the carbonization treatment, the mixture after the carbonization treatment is cooled, and in the process of cooling, the nitrogen atmosphere is converted into an atmosphere containing nitrogen and oxygen until the temperature drops to room temperature, A mixture of carbon products and salts is obtained; the mixture containing carbon products and salts is washed with water to remove salts to obtain a carbon-based catalyst. The preparation method is simple and low in cost, and the carbon-based catalyst has high catalytic activity and selectivity.

Description

technical field [0001] The invention relates to the technical field of catalyst production, in particular to a method for preparing a carbon-based catalyst for hydrogen peroxide preparation and the carbon-based catalyst. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) is an important chemical product widely used in papermaking, textile, chemical synthesis, environmental treatment, medical disinfection, etc. At present, the industry mainly uses the anthraquinone method to produce H 2 o 2 , through hydrogenation, oxidation, extraction, purification, concentration and other processes to obtain different concentrations of H 2 o 2 product, but the process is cumbersome, the production process is discontinuous, and toxic raw materials, toxic solvents, noble metal catalysts, explosive H2, etc. are used, and the energy consumption is high and the risk is high. [0003] Another existing preparation technology of hydrogen peroxide utilizes the oxygen (O 2 ) Reduction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/30C25B1/50C25B11/073
CPCC25B1/30
Inventor 王玉珏夏广森展巨宏张一欣
Owner 清华苏州环境创新研究院
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