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Method for preparing active carbon from caudex of sisal

A technology of activated carbon and sisal, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of high price of activated carbon products, expensive coconut shell raw materials, complicated process, etc., and achieve excellent adsorption performance and large pore volume , The effect of simple process

Inactive Publication Date: 2005-10-19
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like other core shell activated carbon, the production of coconut shell activated carbon needs to go through carbonization → crushing → activation → re-crushing and other processes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0014] Embodiment 1~3: the sisal stalk is washed with water and dried, and it is sawed into fritters according to the size of the carbonization activation furnace sample tank, about 10~20cm long, about 5cm wide, about 3cm high, and then use concentration Diammonium hydrogen phosphate solution of 5wt% is soaked at room temperature for 24 hours for stabilization pretreatment; after drying, the raw material is put into a carbonization activation furnace, and heated to 850°C at a heating rate of 5°C / min under nitrogen protection for carbonization 15 minutes, and kept at this constant temperature, the water vapor with a flow rate of about 2mL / min was introduced to activate the raw materials for 30, 60 and 90 minutes respectively. After the reaction, stop heating and let it cool down to room temperature naturally. The reactant is taken out from the furnace, washed with water and dried to obtain the sisal stem-based activated carbon product.

[0015] Table 1 compares the structure a...

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PUM

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Abstract

A process for preparing activated carbon from sisal hemp stem includes immersing, charring and activating with steam under protection of N2, water washing and baking. Its advantages are large specific surface area, rich mesopore (40-70%), better adsorbability and a certain redox power.

Description

technical field [0001] The invention belongs to the technical field of active carbon manufacture, and specifically refers to a method for preparing active carbon by using sisal stems as raw materials. Background technique [0002] Activated carbon is a kind of porous adsorbent, which is widely used in petroleum, chemical industry, food, medicine, light industry, environmental protection, national defense and other fields. There are a variety of raw materials for making activated carbon, and the commonly used ones include wood, coal, fruit stones, shells, polymers and industrial waste. my country has a vast territory and rich natural resources, and different regions have their own characteristics. There are many kinds of plant-based raw materials that can be used for activated carbon production, many of which have achieved industrial production, and some are in the experimental stage. [0003] However, with the enhancement of the environmental awareness of the whole society,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/08C01B32/336
Inventor 曾汉民陈凤婷
Owner SUN YAT SEN UNIV