A method for preparing activated carbon by microwave-assisted hydrothermal treatment of Chinese fir bark

A microwave-assisted preparation of activated carbon, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of long preparation time of hydrothermal carbon materials, achieve shortened preparation time, mild reaction conditions, and no hysteresis effect Effect

Active Publication Date: 2021-12-07
陕西华拓新能源材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Technical problem to be solved by the present invention: Aiming at the problem of long preparation time of hydrothermal carbon materials, a preparation method of Chinese fir bark microwave hydrothermal activated carbon is provided

Method used

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  • A method for preparing activated carbon by microwave-assisted hydrothermal treatment of Chinese fir bark

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Effect test

Embodiment 1

[0025] Take 2g of fir bark powder, put it in a glass beaker, add 6g of potassium hydroxide solid, then add 50ml of deionized water, then stir with a magnetic stirrer at a speed of 800r / min for 30min, and transfer the stirred mixed solution to a poly In a tetrafluoroethylene high-pressure reactor, place it in a microwave hydrothermal synthesizer under the condition of 180°C and 1.8MPa for the reaction, follow the temperature program for 10 minutes, then cool it down to room temperature naturally, take it out, and dry it in a vacuum oven at 105°C for 10 hours. Then put the dried powder in a sintering furnace at 500°C, sinter for 2 hours under nitrogen, pickle with 1M hydrochloric acid solution twice, then wash with deionized water until neutral, and get a Chinese fir bark after drying Microwave hydrothermal activated carbon.

Embodiment 2

[0027] Take 2g of fir bark powder, put it in a glass beaker, add 6g of potassium hydroxide solid, then add 50ml of deionized water, then stir with a magnetic stirrer at a speed of 800r / min for 30min, and transfer the stirred mixed solution to a poly In a tetrafluoroethylene high-pressure reaction kettle, place it in a microwave hydrothermal synthesizer under the condition of 180°C and 2MPa for the reaction, follow the programmed temperature rise for 15 minutes, then cool it down to room temperature naturally, take it out, and dry it in a vacuum oven at 105°C for 11 hours, then The dried powder is placed in a sintering furnace at 600°C, sintered under nitrogen for 2 hours, pickled twice with 1M hydrochloric acid solution, washed with deionized water until neutral, and dried to obtain a fir bark microwave Hydrothermal activated carbon.

Embodiment 3

[0029] Take 2g of fir bark powder, put it in a glass beaker, add 6g of potassium hydroxide solid, then add 50ml of deionized water, then stir with a magnetic stirrer at a speed of 800r / min for 30min, and transfer the stirred mixed solution to a poly In a tetrafluoroethylene high-pressure reaction kettle, place it in a microwave hydrothermal synthesizer under the condition of 180°C and 2MPa to carry out the reaction, follow the programmed temperature rise reaction for 20 minutes, then cool down to room temperature naturally, take it out and place it in a vacuum oven at 105°C to dry for 12 hours, and then Put the dried powder in a sintering furnace at 700°C, sinter for 2 hours under nitrogen, pickle with 1M hydrochloric acid solution twice, and then wash with deionized water until neutral. After drying, a fir bark microwave Hydrothermal activated carbon.

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Abstract

The invention relates to a method for preparing activated carbon by utilizing Chinese fir bark microwave-assisted hydrothermal. The invention takes Chinese fir bark powder as a raw material; pours the Chinese fir bark powder into a beaker, adds potassium hydroxide and deionized water, and stirs. Obtain a mixed solution; transfer the mixed solution to a high-pressure reactor, react in a microwave hydrothermal synthesizer, dry the reacted mixed solution, sinter in a muffle furnace, and wash the sintered raw materials with acid to Neutral, dry, that is a fir bark microwave hydrothermal activated carbon, which has a good potential in carbon dioxide capture.

Description

technical field [0001] The invention belongs to the technical field of biochar adsorption materials, and in particular relates to a method for preparing activated carbon by using fir bark microwave-assisted hydrothermal. Background technique [0002] In modern society, with the continuous growth of population and rapid economic development, the relationship between "environment" and "energy" is often in opposition, that is, high energy consumption increases environmental pollution. From the point of view of economy, ecology and environment, fossil energy resources are not only gradually exhausted, but also release CO into the atmosphere when they are burned. 2 , which greatly increases the content of greenhouse gases in the atmosphere, leading to the intensification of the greenhouse effect. On the other hand, CO 2 A large amount of emissions have destroyed the homeland on which organisms depend for survival, leading to ecological damage and ecological imbalance. Therefore...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/324C01B32/348
CPCC01B32/324C01B32/348
Inventor 赵伟刚范毜仔罗路陈婷婷吴希李泽亮
Owner 陕西华拓新能源材料科技有限公司
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