Carbon nanotube adsorption member, preparation method and application

A technology of carbon nanotubes and carbon nanotube arrays, which is applied in the field of carbon nanotube adsorption components and preparation, can solve the problems of reduced adsorption performance and loss of carbon nanotubes, and achieve equipment cost reduction, high space utilization, and large adsorption capacity Effect

Active Publication Date: 2020-11-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, long-term fluid scouring will lead to the loss of carbon nanotubes and the decline in adsorption performance

Method used

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  • Carbon nanotube adsorption member, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] One side of the copper wire mesh belt was sprayed with a nickel-based catalyst capable of growing carbon nanotubes, and after heat treatment, it was placed in the reactor. At a temperature of 320° C. and a pressure of 0.1 MPa, a nitrogen gas of 160 ppm of xylene was introduced, and the reaction time was 60 minutes. After the carbon-containing process gas is cracked, a dense carbon nanotube array layer is formed on one side of the metal wire mesh; after the reaction is stopped, the copper wire mesh belt with the carbon nanotube array layer is taken out. The two layers of carbon nanotube array layers are inserted into each other to form a belt-like structure in which one side of the copper mesh belt where no carbon nanotubes are deposited is separated from the other side where the carbon nanotubes are deposited. After bundling and fixing the belt-like structure, it is packed with filter cloth on the outside for later use.

[0031] According to the inner diameter of the c...

Embodiment 2

[0034] One side of the copper wire mesh was sprayed with a nickel-based catalyst capable of growing carbon nanotubes, and after heat treatment, it was placed in the reactor. At a temperature of 500° C., a pressure of 1 MPa, and hydrogen containing 20% ​​methane, the reaction time was 4 hours. After the carbon-containing process gas is cracked, a dense carbon nanotube array layer is formed on one side of the copper wire mesh belt; after the reaction is stopped, the copper wire mesh belt with the carbon nanotube array layer is taken out. Three copper wire mesh ribbons with carbon nanotube array layers are stacked to form a ribbon structure in which one side of the copper wire mesh ribbon is not deposited with carbon nanotubes and the other side where carbon nanotubes are deposited is spaced apart. After bundling and fixing the belt-like structure, it is packed with filter cloth on the outside for later use.

[0035] According to the inner diameter of the cylindrical container o...

Embodiment 3

[0038] One side of the stainless steel mesh belt is sprayed with a cobalt-based catalyst capable of growing carbon nanotubes, and after heat treatment, it is placed in a reactor. A mixed gas containing 6% CO and 30% isopropanol was introduced, the temperature was 400° C., the pressure was 0.5 MPa, and the reaction time was 2 hours. After the carbon-containing process gas is cracked, a dense carbon nanotube array layer is formed on one side of the wire mesh belt; after the reaction is stopped, the stainless steel wire mesh belt with the carbon nanotube array layer is taken out. Four stainless steel wire mesh belts with carbon nanotube array layers are stacked to form a belt-like structure in which one side of the stainless steel mesh belt without carbon nanotubes is deposited and the other side with carbon nanotubes deposited at intervals. After bundling and fixing the belt-like structure, it is packed with filter cloth on the outside for later use.

[0039] According to the i...

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Abstract

The invention discloses a carbon nannotube adsorption component as well as a preparation method and application of the carbon nannotube adsorption component. Carbon nanotubes of the carbon nannotube adsorption component grow at one side of each metal wire mesh belt, a strip-shaped structure is formed at the side by arranging the sides, not provided with carbon, of the metal wire mesh belts at intervals; upper and lower outer layers of the strip-shaped structure are packaged by using filter cloth, and the whole strip-shaped structure is strip-shaped and can be wound; when being wound to form acylindrical structure, the strip-shaped structure has the height-to-diameter ratio of 1:1 to 1:5; and a carbon nannotube adsorption device applying the carbon nannotube adsorption component is internally filled with the carbon nannotube adsorption component, the void ratio of a bed layer of the component is 70-95%, and no gas or liquid distribution devices are arranged in the device. The inventionfurther discloses a preparation method of the carbon nannotube adsorption component and a mounting method of the carbon nannotube adsorption device; it is not needed that the carbon nannotube adsorption device is additionally provided with an independent gas or liquid distribution device, and the carbon nannotube adsorption device can be used for adsorbing and rapidly desorbing organic matters inwastewater or gases; and the carbon nannotube adsorption component has the advantages such as firm structure, long service life, high throughput, low preparation cost and low treatment energy consumption.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterials, and in particular relates to a carbon nanotube adsorption component, a preparation method and an application. Background technique [0002] Carbon nanotube is a new type of nanomaterial with large specific surface area, good chemical stability and non-polar surface. It can effectively adsorb non-polar organic matter in gas or liquid, and the weight of adsorbed organic matter can be 10- 100 times, showing better performance than traditional activated carbon materials. In addition, based on the principle of polarity and non-polarity, non-polar organic matter in water can also be adsorbed, such as reports on the use of carbon nanotubes to adsorb gasoline, diesel oil or phenol in water. [0003] However, carbon nanotubes adsorb a large amount of organic matter, which is not suitable for wastewater and wastewater gas with low concentration of organic matter. It has been reported that ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01D53/02C02F1/28C01B32/162C02F101/38
CPCB01D53/02B01D2253/102B01J20/205C02F1/283C02F2101/38
Inventor 骞伟中多尼杨周飞杨逸风尹泽芳
Owner TSINGHUA UNIV
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