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Method for preparing high surface-activity adsorbing carbon material through catalysis and activation synchronous process

A technology of high surface activity and adsorption materials, applied in the field of preparation of high surface activity adsorption carbon materials, can solve the problems of difficult product pore distribution, complex preparation process, large amount of activator, etc., to achieve shortened activation production process, good quality and high product quality high rate effect

Active Publication Date: 2013-03-27
成都益盛环境工程科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the current high-surface materials, the amount of activator used in the preparation is too large, the product pore distribution is difficult to control, the preparation process is complicated, and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Crushing and sieving petroleum coke into 200-300 mesh powders, carbonizing in a carbonization furnace at 800°C for 2 hours, taking 100 parts of petroleum coke carbon powder with 200 parts of potassium hydroxide KOH or sodium hydroxide and 1.0 % iron molybdenum catalyst, after mixing well. Set the activation temperature of the activation furnace according to the process requirements, turn on the heating power of the activation furnace, and raise the temperature of the activation furnace; after the activation section of the activation furnace is heated up to the operating temperature and the temperature is constant, start the ejector machine. Then put the above mixed material into a pre-activation furnace and activate it at 300° C. for 2 hours. Then enter the medium temperature section of the high temperature activation furnace, activate at 750°C for 1 hour, then enter the high temperature section, and activate at 1000°C for 2 hours. After activation, the mate...

Embodiment 2

[0021] Embodiment 2: According to the method of above-mentioned embodiment 1, petroleum coke is pulverized, sieved into powder of 400~500 meshes, carbonizes at 600 ℃ for 2 hours, gets 100 parts of petroleum coke carbon powders with 200 parts of KOH and 2.5% iron The molybdenum catalyst is fully mixed and impregnated, and then the above mixture is put into the pre-activation furnace and activated at 350°C for 1 hour, then enters the middle temperature section of the high-temperature activation furnace, and enters the high-temperature section after being activated at 850°C for 2 hours. Activation at 950°C for 1 hour. After activation, the material is cooled down, washed with water and pickled until neutral, and fully dried to obtain a powdery high surface activity adsorption material. Its specific surface area BET=1921.9M 2 / g, the apparent specific capacitance of double electrodes in an organic system at room temperature is 50F / g.

Embodiment 3

[0022] Example 3: According to the method of the above-mentioned Example 1, the pitch coke was crushed and then carbonized at 800° C. for 2 hours, crushed and sieved into 200-300 mesh powders, and 100 parts of pitch coke powder was used with 300 parts of KOH, and 3.0% of the catalyst is fully mixed and impregnated, and then the above mixture is put into the pre-activation furnace and activated at 450°C for 2 hours, then enters the middle temperature section of the high-temperature activation furnace, activates at 700°C for 1 hour, and then enters the high-temperature section. Activation at 1050°C for 2 hours. After activation, the material is cooled down, washed with water and pickled until neutral, and fully dried to obtain a powdery high surface activity adsorption material. Its specific surface area BET = 1606M 2 / g, the apparent specific capacitance of the double electrode in the organic system at room temperature is 41F / g.

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Abstract

The invention provides a method for preparing a high surface-activity adsorbing carbon material through a catalysis and activation synchronous process, which can markedly reduce environmental pollution, can lower the production cost of the adsorbing carbon material, and is easy for industrialization. The method comprises the following steps of: firstly, pulverizing petroleum coke or a wooden husk, carbonizing, then mixing with an alkali medium activator, preactivating, then activating at different temperature segments of a high-temperature activation furnace, and controlling the specific surface area and the pore diameter distribution of the high surface-activity adsorbing carbon material by adopting a double-furnace three-segment catalysis and activation synchronous method. The method comprises the following steps of: carbonizing raw materials in the activation furnace for 2 hours at the temperature of 300-800 DEG C, then adding carbon powder and 1-5% of catalyst according to the proportion of the carbon powder and KOH of 1:1-1:2, directly mixing with the raw materials, and heating to 150-550 DEG C for carrying out preactivation reaction for 1-2 hours; then enabling the material to enter the high-temperature activation furnace, reacting for 1-2 hours at a medium temperature segment at the temperature of 650-850 DEG C, and then reacting for 1-2 hours at a high temperature segment at the temperature of 950-1050 DEG C.

Description

technical field [0001] The present invention relates to a method for preparing high surface activity adsorption carbon material by catalysis and activation synchronous method. method of carbon materials. technical background [0002] The traditional man-made material activated carbon is a kind of charcoal, not really activated carbon. Since the advent of activated carbon for one hundred years, the application fields have been expanding day by day, and the application fields have been increasing. It has a wide range of uses and is regarded as a "universal adsorbent". It is a research and development hotspot in the field of new materials. It has been widely used in high-demand fields such as environmental protection, industry and civil use, adsorption storage of natural gas, medicine and chemical industry, air purification, electric double layer supercapacitors, military affairs, and aerospace, and has achieved considerable results. [0003] Activated carbon is a kind of po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30
Inventor 漆长席
Owner 成都益盛环境工程科技有限责任公司
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