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Method for preparing active carbon with height ratio surface area

A high specific surface area, high specific surface technology, applied in the field of chemical production, can solve the problems of insufficient specific surface area, high product price and lack of competitiveness of activated carbon

Inactive Publication Date: 2003-10-08
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these methods, some methods are restricted by raw materials, resulting in higher product prices; although some methods have sufficient raw materials for producing activated carbon, the specific surface area of ​​activated carbon produced is not large enough due to the limitations of the method itself and serious pollution. Disadvantages such as lack of competitiveness in the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0005] Method 1. Put 1Kg of solid waste corn cobs crushed to 60 mesh into a carbonization furnace, carbonize at 450°C for 4 hours under the condition of nitrogen gas, and soak for 2 hours with molecular permeation activation solution after cooling. The activation solution is made of 0.03 Kg JFC, 0.02KgMP, 0.01Kg soap, 0.03Kg sodium peroxide, 3.5Kg potassium hydroxide and 0.8Kg distilled water are prepared in a larger plastic container under the stirring of a glass rod, and the impregnated charcoal is dried Put it into a high-temperature activation furnace with nitrogen, and activate it under the condition of controlling the temperature at 800°C for 1 hour; take it out after cooling, and use 3mol·L -1 Hydrochloric acid pickling until neutral, then rinse with hot distilled water at 60°C, hot filter, and bake at 120°C for 8 hours to get a specific surface area of ​​2800m 2 / g of high-quality activated carbon.

[0006] Method 2. Put 1Kg of solid waste corncobs crushed to 40 mesh ...

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PUM

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Abstract

An activated carbon with high specific surface area is prepared from corn cob through chirring, treating with molecular osmotic activating liquid, high-temp treating, neutralizing with hydrochloric acid, washing and baking. Its advantages are high specific surface area (2600-2800 sq.m / g) and no environmental pollution.

Description

1. Technical field [0001] The invention relates to activated carbon with a high specific surface area and a preparation method thereof, belonging to the technical field of chemical production. 2. Technical Background [0002] The preparation of activated carbon with high specific surface is not only a new requirement for environmental protection, food processing, fine medicine, chemical industry, electronics and other departments, but also to meet the special requirements for new materials in some high-tech fields (such as hydrogen storage materials etc.), so this kind of material will be more and more valued by the field of high-tech development, and has broad application prospects in the future development. The traditional preparation of activated carbon usually uses the shells of plant fruits (such as coconut shells, spade shells, apricot shells, rice husks), coal, and petroleum coke and pitch developed in recent years as raw materials. Among these methods, some methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B31/12
Inventor 谢克昌曹青鲍卫仁吕永康申暑光赵彦生叶俊岭
Owner TAIYUAN UNIV OF TECH