Modification method for activated carbon fiber

A technology of activated carbon fiber and modification, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problem of secondary pollution of activated carbon fiber, and achieve easy operation, easy industrialization, and easy conditions control effect

Inactive Publication Date: 2014-03-12
YANGZHOU UNIV
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Problems solved by technology

[0004] The surface chemical structure and pore structure of activated carbon fibers are important factors affecting its adsorption capacity. Physical modification and chemical modification can be used to change its surface chemical structure and pore structure to further improve its adsorption performance. Chemical modifications such as sodium will cause secondary pollution to activated carbon fibers

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  • Modification method for activated carbon fiber
  • Modification method for activated carbon fiber
  • Modification method for activated carbon fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] 1. Modification process:

[0021] Put the activated carbon fiber with a diameter of 10-20 μm into boiling water and boil for 15 minutes, take it out, wash it with deionized water and put it in a constant temperature drying oven at 70°C, dry it for 3 hours and take it out.

[0022] The above-mentioned pretreated activated carbon fiber was used as a raw material, placed in a microwave chemical reactor, and the parameters of the microwave reactor were adjusted as follows: 800W, 150V, microwave radiation modified for 1min, and then taken out to obtain modified activated carbon fiber.

[0023] 2. Performance test:

[0024] 1. The morphology scanning electron microscope test was carried out on the activated carbon fibers before and after modification, and the images of different magnifications were obtained. figure 1 , 2 , 3, 4. from figure 1 , 3 It can be seen that after the activated carbon fiber is modified, the fiber is partially broken, and the figure 2 , 4 It ca...

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Abstract

The invention relates to a modification method for an activated carbon fiber, and belongs to the technical field of material manufacture, particularly to a modification technology of the activated carbon material. The activated carbon fiber is boiled in boiling water under the ordinary pressure, taken out, cleaned with deionized water, dried at the constant temperature of 70 DEG C, and taken out; then the preprocessed activated carbon fiber is treated with microwave radiation of 800W and 150V. The modification method is simple in operation, and easy to control and industrialize, and economical and pollution-free when compared with a chemical modification method; the modified activated carbon fiber is larger in specific surface area, larger in low-pressure adsorption capability and specific pore volume, higher in adsorption capability and stable in structure, and adopts an un-destroyed structure of the original activated carbon fiber, compared with the original activated carbon fiber.

Description

technical field [0001] The invention belongs to the technical field of material production, in particular to the modification technology of active carbon materials. Background technique [0002] Activated carbon fiber (ACF), also known as fibrous activated carbon, is a high-efficiency active adsorption material and environmental protection engineering material with better performance than powder activated carbon and granular activated carbon. It has many micropores and large specific surface area. It has more than 50% carbon atoms located on the inner and outer surfaces and has formed a unique adsorption structure, which is usually called a surface solid. Activated carbon fiber is a new type of adsorption material made of polypropylene-based, viscose-based fiber, and pitch-based fiber through high-temperature carbonization activation process. The narrow pore size distribution and relatively developed specific surface area make it have a faster The adsorption, desorption spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
Inventor 刁国旺黄建祥张旺狄健
Owner YANGZHOU UNIV
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