Simple and convenient method of preparing magnetic bagasse based active carbon by one step

A sugarcane bagasse and activated carbon technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of unfavorable mass production, high preparation cost, complex preparation process of technological process, etc., and achieves curbing secondary cracking reaction. , the effect of reducing activation energy and simple process

Inactive Publication Date: 2019-02-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method also involves the use of a variety of reagents, and the process is complicated, the preparation process requires multiple heatings, and the preparation cost is high, which is not conducive to mass production

Method used

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  • Simple and convenient method of preparing magnetic bagasse based active carbon by one step
  • Simple and convenient method of preparing magnetic bagasse based active carbon by one step
  • Simple and convenient method of preparing magnetic bagasse based active carbon by one step

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take a certain quality of zinc chloride and ferric chloride (the ratio of bagasse to activator and magnetic additive is 1:1:12%) and dissolve them in 80mL of distilled water, add 10g of bagasse to the mixed solution, and use Stir the solution with a stirrer at medium speed for 2 h. Then stand at room temperature for 22 hours, and dry to obtain the mixed raw material. Put the dried mixed raw materials in a self-made stainless steel reactor, and place the stainless steel reactor in a resistance furnace to ensure that the device is correctly connected to the vacuum pump and the exhaust gas absorption device and has good airtightness. Start the vacuum pump to keep the internal pressure of the reactor at 10kPa, raise the temperature to 500°C, and pyrolyze for 60min. The solid product was taken out and boiled with distilled water for 30 minutes, washed, dried and ground to obtain powdered magnetic bagasse-based activated carbon A.

Embodiment 2

[0021] Take a certain quality of zinc chloride and ferric chloride (the ratio of bagasse to activator and magnetic additive is 1:1:10%) and dissolve it in 80mL of distilled water, add 10g of bagasse to the mixed solution, and use Stir the solution with a stirrer at medium speed for 2 h. Then stand at room temperature for 22 hours, and dry to obtain the mixed raw material. Put the dried mixed raw materials in a self-made stainless steel reactor, and place the stainless steel reactor in a resistance furnace to ensure that the device is correctly connected to the vacuum pump and the exhaust gas absorption device and has good airtightness. Start the vacuum pump to keep the internal pressure of the reactor at 10kPa, raise the temperature to 500°C, and pyrolyze for 60min. The solid product was taken out and boiled with distilled water for 30 minutes, washed, dried and ground to obtain powdered magnetic bagasse-based activated carbon B.

Embodiment 3

[0023] Take a certain quality of zinc chloride and ferric chloride (the ratio of bagasse to activator and magnetic additive is 1:1:8%) and dissolve it in 80mL of distilled water, add 10g of bagasse to the mixed solution, and use Stir the solution with a stirrer at medium speed for 2 h. Then stand at room temperature for 22 hours, and dry to obtain the mixed raw material. Put the dried mixed raw materials in a self-made stainless steel reactor, and place the stainless steel reactor in a resistance furnace to ensure that the device is correctly connected to the vacuum pump and the exhaust gas absorption device and has good airtightness. Start the vacuum pump to keep the internal pressure of the reactor at 10kPa, raise the temperature to 500°C, and pyrolyze for 60min. The solid product was taken out and boiled with distilled water for 30 minutes, washed, dried and ground to obtain powdered magnetic bagasse-based activated carbon C.

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Abstract

The invention discloses a simple and convenient method of preparing magnetic bagasse based active carbon by one step. The method comprises the steps of taking bagasse in loose texture as a raw material, directly dipping an activator zinc chloride and a magnetic additive ferric chloride into the raw material in an ion form, and regulating the quantity of the magnetic additive, a carbonization temperature and system pressure to prepare the magnetic active carbon. According to the method, a magnetic precursor is introduced into the biological raw material in an ion form; activation, carbonizationand magnetization are performed synchronously; the magnetic active carbon is prepared by one step; a technical flow is simple; the production cost is low; all split products are effectively collectedin a vacuum environment; the environmental pollution is low; the obtained product is large in specific surface area and excellent in absorbability; a magnetic compound is formed in the raw material and securely combined with the raw material; and a magnetic property of the product is stable.

Description

technical field [0001] The invention relates to the technical field of biomass pyrolysis technology and preparation of activated carbon, in particular to a method for preparing magnetic activated carbon in one step by vacuum pyrolysis of biomass. Background technique [0002] Activated carbon, a carbonaceous adsorption material, is widely used in environmental governance, carrier catalysis, hydrogen storage materials, super electric heating, food production, biomedicine, metallurgical industry and other fields due to its developed pore structure, excellent adsorption performance and stable chemical properties. [0003] The widespread use of activated carbon, especially in solution, still has major obstacles in terms of separation and recovery technologies. The recovery methods of waste activated carbon mainly include sedimentation method and filtration method. Although these two methods are easy to operate and the cost is not high, they take a long time to recover and are b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348C01B32/324
CPCC01B32/348C01B32/324
Inventor 丘克强唐惠芳
Owner CENT SOUTH UNIV
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