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Preparation technology of puffskein activated carbon

A kind of cattail activated carbon and the technology of preparation process, which is applied in the field of preparing cattail activated carbon fiber, can solve the problems of high production cost, and achieve the effects of low production cost, large specific surface area and simple preparation process

Inactive Publication Date: 2008-07-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, some researchers use cotton as raw material to prepare activated carbon fiber, but the production cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Cut off the spikes on the cattails, and take the cattails on the inflorescences. Dry the cattail fleece at 120°C to remove water, soak it in 25% phosphoric acid at a weight ratio of 1:2.0, and heat and soak it in a water bath at 60°C-80°C for 30 minutes. Put it in a muffle furnace (or carbonization furnace) and wait for the program to heat up to 260°C, then perform carbonization and activation for 80 minutes, turn off the power, and stew in the furnace for 2 hours before taking it out. Then wash with distilled water (or deionized water) at 80° C.-100° C. until the pH value is 6.5-7.0, and dry to obtain cattail activated carbon fibers.

Embodiment 2

[0011] Cut off the spikes on the cattails, and take the cattails on the inflorescences. Dry the cattail fleece at 120°C to remove water, soak it in 30% phosphoric acid at a weight ratio of 1:1.8, and heat and soak it in a water bath at 60°C-80°C for 40 minutes. Put it in a muffle furnace (or carbonization furnace) and wait for the temperature to be raised to 280°C, then perform carbonization and activation for 60 minutes, turn off the power, and stew in the furnace for 2 hours before taking it out. Then wash with distilled water (or deionized water) at 80° C.-100° C. until the pH value is 6.5-7.0, and dry to obtain cattail activated carbon fibers.

Embodiment 3

[0013] Cut off the spikes on the cattails, and take the cattails on the inflorescences. The cattail fleece is dried at 120°C to remove water, soaked in 35% phosphoric acid at a weight ratio of 1:1.6, and heated and soaked in a water bath at 60°C-80°C for 50 minutes. Put it in a muffle furnace (or carbonization furnace) and wait for the program to heat up to 300°C, then perform carbonization and activation for 40 minutes, turn off the power, and stew in the furnace for 2 hours before taking it out. Then wash with distilled water (or deionized water) at 80°C-100°C until the pH value is 6.5-7.0, and dry to obtain the cattail velvet activated carbon fiber.

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Abstract

The invention provides a technique for preparing a cotton grass active carbon. The preparation method is that: cut a spadix from a cattail, remove cattail wool from the inflorescence and dry the cattail wool at the temperature of 120 DEG C to get rid of moisture, then soak the cattail wool in a phosphoric acid with the concentration of 25-30 percent according to the weight ratio of 1:1.6-1:2.0; then the cattail wool is heated with water bath at the temperature of 60-80 DEG C and steeped for 30-50 minutes; place the cattail wool in a muffle furnace or a carbonization oven and raise the temperature to 260-300 DEG C for carrying out carbonizing activation for 40-80 minutes, then stop heating operation and take out the cattail wool after being kept for 2 hours in the oven; wash the cattail wool with a 80-100 DEG C distilled water or deionized water until the PH value reaches 6.5-7.0 and finally dry the cattail wool. The invention adopts a chemical process to produce cattail wool active carbon fiber, the production process is simple, the production speed is high and the production cost is low, furthermore, the fiber texture is not damaged and the cattail wool active carbon fiber with great adsorption capacity (2-4 times higher than an ordinary active carbon), large specific area, rich micropores and high mechanical strength can be obtained.

Description

technical field [0001] The invention relates to a process for preparing cattail activated carbon fibers by a chemical method. Background technique [0002] The commonly used precursors for the preparation of activated carbon fibers are: cellulose-based, PAN-based, phenolic-based, polyvinyl alcohol-based, styrene / olefin copolymer, etc. Currently, the first four are widely used. However, the process for preparing activated carbon fibers using the above-mentioned organic precursors is complex and costly, and causes serious environmental pollution. [0003] In recent years, the use of cellulose as a natural polymer material as an adsorbent has attracted people's attention, and more and more related developments and utilizations have been made. Among them, some researchers use cotton as raw material to produce activated carbon fiber, but the production cost is relatively high. Contents of the invention [0004] The invention aims at the deficiency of the existing activated ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08
Inventor 张成禄张建丁瑾史倩倩李燕邹红艳
Owner SHANDONG UNIV
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