Preparation method and apparatus for amorphous nano carbon tube

A technology for carbon nanotubes and preparation devices, which is applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of high requirements on device sealing, difficult continuous production, and high raw material cost, and achieves easy operation, increased output, and improved equipment. well-structured effect

Inactive Publication Date: 2007-03-07
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0003] The present invention aims at the disadvantages of the prior art that the cost of raw materials is relatively high, the requirements for device sealing are high, and it

Method used

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  • Preparation method and apparatus for amorphous nano carbon tube
  • Preparation method and apparatus for amorphous nano carbon tube
  • Preparation method and apparatus for amorphous nano carbon tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mix the waste coke powder, tar and nickel powder according to the mass ratio of 68.2:24.5:7.3. After the mixture is extruded into a coke rod with an outer diameter of 1.00cm on the screw feeder, the coke rod is placed in a tube furnace Under the protection of nitrogen, the temperature was programmed to 900 °C, and carbonized at this temperature for 4 hours to obtain a carbon rod with a certain electrical conductivity. The outer diameter of the carbon rod was 0.95 cm and the length was 15 cm.

[0022] (2) the carbon stick that makes with step (1) is anode, and high-purity graphite stick is cathode, in the mixed atmosphere that the volume ratio of helium (purity is 99.5%) and acetylene (purity is 98.5%) is 4: 1 In the process, the carbon nanotube material was prepared by arc discharge under normal pressure ((0.1±0.0005) MPa). The arc discharge stopped after 15 minutes, and the solid phase product containing amorphous carbon nanotubes was mainly formed at the cathode. I...

Embodiment 2

[0027] (1) With the step (1) of embodiment 1.

[0028] (2) the carbon stick that makes with step (1) is anode, and high-purity graphite stick is cathode, in the mixed atmosphere that the volume ratio of nitrogen (purity is 99.5%) and acetylene (purity is 98.5%) is 4: 1 , carbon nanotube materials were prepared by arc discharge under normal pressure ((0.1 ± 0.0005) MPa), the arc discharge stopped after 15 minutes, and the solid phase products containing amorphous carbon nanotubes were mainly formed at the cathode, and the cathode products in this atmosphere could be Up to 6.5g. The scanning electron micrograph of the product is similar to Example 1.

Embodiment 3

[0030] (1) With the step (1) of embodiment 1.

[0031] (2) the carbon rod that step (1) makes is anode, and high-purity graphite rod is negative electrode, in the volume ratio of nitrogen (purity is 99.5%) and acetylene (purity is 98.5%) and carbon dioxide (purity is 98.5%) In a mixed atmosphere of 80:15:5, carbon nanotube materials were prepared by arc discharge under normal pressure ((0.1±0.0005) MPa), and the arc discharge stopped after 15 minutes, and the solid-phase products containing amorphous carbon nanotubes were mainly in The cathode is formed, and the cathode product can reach 4.5g in this atmosphere. The scanning electron micrograph of the product is similar to Example 1.

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Abstract

The invention discloses a preparing method and device of amorphous nanometer carbon pipe in the mutual crossing domain of coal chemical, chemical reacting engineering and charcoal material, which is characterized by the following: blending pulverized coke, coal oil and nickel powder; moulding and charring to prepare anodic coke bar of arc discharge in the buffer gas (helium or nitrogen) and other gas (acetylene or acetylene and carbon dioxide).

Description

technical field [0001] The invention belongs to the intercrossing technical field of coal chemical industry, chemical reaction engineering and carbon material science, and specifically relates to a preparation method and device of an amorphous nano-carbon tube. Background technique [0002] Most of coking plant waste - coke powder is used to produce synthesis gas, prepare activated carbon and as fuel, etc., and coke powder is also used for coking, but the products produced by these methods have low added value. In recent years, people have attempted to prepare low-resistance carbon materials using coke powder as raw materials to realize high value-added utilization of coke powder. For example, Chinese patent CN1304870, "a preparation method of a low-resistivity carbon material", is to mix coke powder and metal titanium powder, etc., and heat-press at 2000-2600 ° C under a pressure of 30 MPa to obtain a low-resistivity carbon material. The preparation process of this method ...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B3/00
Inventor 何孝军郑明东蒋莉晏善成樊传刚
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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