Preparation method and magnetic activated carbon prepared by same

A technology of magnetic activated carbon and waste biomass, which is applied in the preparation of magnetic activated carbon and the field of magnetic activated carbon, which can solve the problems of complex production process and the inability to solve the stability and adsorption of magnetic activated carbon at the same time, and achieve simple and clean preparation process Environmental protection and low energy consumption

Inactive Publication Date: 2014-04-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current method of making magnetic activated carbon cannot solve the problems of stability and adsorption at the same time, and the production process is complic

Method used

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  • Preparation method and magnetic activated carbon prepared by same
  • Preparation method and magnetic activated carbon prepared by same
  • Preparation method and magnetic activated carbon prepared by same

Examples

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Embodiment 1

[0048] Weigh 10g of zinc chloride, add 40mL of water and 2mL of concentrated hydrochloric acid to prevent hydrolysis of zinc chloride. Weigh 5g of Chinese fir sawdust, immerse the Chinese fir sawdust in zinc chloride solution for 24h, wherein the mass ratio of sawdust to zinc chloride is 1:2, weigh 0.3g Fe 3 o 4 , and 0.3g lauric acid, Fe 3 o 4 Add 15mL of water with lauric acid, add 2mL of 5mol / L NaOH solution, and bathe in water at 90°C for 0.5h; add dilute hydrochloric acid to it to pH=4~5, and collect Fe 3 o 4 The particles were washed with water until pH = 7, then 0.6g sodium dodecylsulfonate and 20mL water were added, and the magnetic agent was prepared in a water bath at 60°C for 1 hour. Mix the impregnated fir chips with the magnetizer, stir evenly, and dry. The dried sample was weighed and placed in a reaction furnace, protected by argon, cracked at a final temperature of 450°C, the heating rate was 5°C / min, and the magnetic activated carbon was prepared under th...

Embodiment 2

[0050] Weigh 10g of zinc chloride, add 40mL of water and 2mL of concentrated hydrochloric acid to prevent hydrolysis of zinc chloride. Weigh 5g of Chinese fir sawdust, immerse the Chinese fir sawdust in zinc chloride solution for 24h, wherein the mass ratio of sawdust to zinc chloride is 1:2, weigh 0.5g Fe 3 o 4 , and 1.0g lauric acid, Fe 3 o 4 Add 15mL of water with lauric acid, add 2mL of 5mol / L NaOH solution, and bathe in water at 90°C for 0.5h; add dilute hydrochloric acid to it to pH=4~5, and collect Fe 3 o 4 The particles were washed with water until pH = 7, then 1.0g of sodium dodecylsulfonate and 20mL of water were added, and the magnetic agent was prepared in a water bath at 60°C for 1 hour. Mix the impregnated fir chips with the magnetizer, stir evenly, and dry. The dried sample was weighed and placed in a reaction furnace, protected by argon, cracked at a final temperature of 450°C, the heating rate was 5°C / min, and the magnetic activated carbon was prepared un...

Embodiment 3

[0052] Weigh 10g of zinc chloride, add 40mL of water and 2mL of concentrated hydrochloric acid to prevent hydrolysis of zinc chloride. Weigh 5g of Chinese fir sawdust, immerse the Chinese fir sawdust in zinc chloride solution for 24h, wherein the mass ratio of sawdust to zinc chloride is 1:2, weigh 0.5g Fe 3 o 4 , and 1.0g lauric acid, Fe 3 o 4 Add 15mL of water with lauric acid, add 2mL of 5mol / L NaOH solution, and bathe in water at 90°C for 0.5h; add dilute hydrochloric acid to it to pH=4~5, and collect Fe 3 o 4 The particles were washed with water until pH = 7, then 1.0g of sodium dodecylsulfonate and 20mL of water were added, and the magnetic agent was prepared in a water bath at 60°C for 1 hour. Mix the impregnated fir chips with the magnetizer, stir evenly, and dry. The dried sample was weighed and placed in a reaction furnace, protected by argon, cracked at a final temperature of 400°C, the heating rate was 5°C / min, and the magnetic activated carbon was prepared un...

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Abstract

The invention relates to a preparation method and magnetic activated carbon prepared by the same. According to the invention, waste biomass is used as a raw material to prepare the magnetic activated carbon, and the raw material is low in price and easily available, so that the production cost of the magnetic activated carbon is greatly lowered. The activated carbon is recycled so as to avoid secondary pollution, and the preparation method has important meaning on the elimination of secondary pollution. In addition, the magnetic activated carbon is prepared by one step by combining three processes including carbonization, activation and magnetization. The production process is simple and the cost is lowered. Furthermore, the magnetic activated carbon not only has the advantages of high specific surface area and good adsorptive property, but also has an adjustable pore structure and has enough magnetic intensity and stable magnetic property.

Description

technical field [0001] The invention relates to a method for preparing magnetic activated carbon and magnetic activated carbon prepared by the method. Background technique [0002] Activated carbon has the advantages of high specific surface area, good adsorption performance, easy regeneration, rich functional groups on the surface, good catalytic performance and stable chemical performance. It has been widely used in environmental protection, national defense, chemical industry, food and other fields. Activated carbon can be made from carbon-rich substances. A large amount of waste biomass is produced every year in our country, and these waste biomass has high carbon content, which is an excellent raw material for the preparation of activated carbon. [0003] However, the recovery and utilization of activated carbon after use is a problem that needs to be solved in the field of activated carbon application. At present, the methods for recovering activated carbon mainly in...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30
Inventor 丘克强和艳丽
Owner CENT SOUTH UNIV
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