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Prepn process of composite onion-shaped fullere material with homogeneous grain size

A technology of onion-like fullerene and composite materials, which is applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of uneven particle size and low purity of onion-like fullerene, and achieve convenient use of templates and high purity. High, foreground attractive effect

Inactive Publication Date: 2007-03-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] The problem to be solved by the present invention is that the particle size of the existing onion-like fullerene is not uniform, and contains impurities such as carbon nanotubes, and the purity is not high; Material preparation method

Method used

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  • Prepn process of composite onion-shaped fullere material with homogeneous grain size

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Embodiment 1

[0019] Weigh 2g of ferrocene catalyst and zeolite powder with a pore size of 100nm respectively, put them into quartz boats respectively, put the quartz boat loaded with zeolite into the middle of the quartz tube reactor, and place the quartz boat loaded with ferrocene catalyst in the middle of the quartz tube reactor. At one end of the gas inlet of the quartz tube, the quartz tube reactor is closed, and argon gas is introduced to exhaust the air in the quartz tube reactor. After the temperature of the reaction zone rises to 1273K, the valve of the acetylene gas is opened to allow the argon and acetylene gas to Mix in a ratio of 10:1, flow through the quartz tube reactor continuously, heat the ferrocene catalyst in the quartz boat, and the ferrocene catalyst will be sublimated and decomposed by heat to form nano-sized particles as catalysts, which are blown into the reaction zone by argon flow for reaction , the carbon source is provided by pyrolyzed acetylene gas and ferrocene...

Embodiment 2

[0021] Weigh 2g each of the cobaltocene catalyst and zeolite powder with a pore size of 100nm, and put them into quartz boats respectively. At one end of the gas inlet, the quartz tube reactor is closed, and argon is introduced to empty the air in the quartz tube reactor. After the temperature in the reaction zone rises to 1173K, the valve of methane gas is opened to make the ratio of argon gas and methane gas to 10: The ratio of 1 is mixed, continuously flows through the quartz tube reactor, and the cobaltocene catalyst in the quartz boat is heated. The cobaltocene catalyst is sublimated and decomposed by heat to form nano-sized particles, which are blown into the reaction zone by the argon flow for reaction. The carbon source is heated by heat. The decomposed methane gas and cobaltocene catalyst are provided together, and these substances are recombined to form cobalt-encapsulated onion-like fullerene. After the catalyst is consumed, it is kept for 30 minutes. After the quart...

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Abstract

The present invention discloses preparation process of composite onion-shaped fullerene material with homogeneous grain size. Through chemical vapor deposition with zeolite of different types and homogeneous pore size as template, added catalyst and cheap inert gas and nitrogen as carrier gas, and in effectively controlled technological parameters, including reaction temperature, time, gas flow rate, etc. composite onion-shaped fullerene material in homogeneous grain size is prepared. The technological process of the present invention is simple and fast, and the prepared onion-shaped fullerene has high purity, stable performance and other advantages and great latent application value.

Description

technical field [0001] The invention relates to a method for preparing onion-like fullerene, in particular to a method for preparing a metal-encapsulated onion-like fullerene composite material with uniform particle size. Background technique [0002] Onion-like fullerene composite material is a new type of carbon nanocomposite material with a special "shell-core" structure. It has shown great potential application value in the fields of energy, catalysis, information storage and medical science. The current arc method , chemical vapor deposition, ion beam irradiation, and carbon ion implantation can all introduce catalysts in different ways to prepare onion-like fullerene composites with metal (Fe, Co, Ni, Al, Cu, etc.) particles inside, but their The particle size is uneven, the yield is very low, and it is often accompanied by the formation of carbon nanotubes, amorphous carbon and other impurity substances, which are not conducive to the research on its physical, chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82B3/00
Inventor 许并社王晓敏姚延立郭俊杰杨晓伟
Owner TAIYUAN UNIV OF TECH
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