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Preparation method and device of carbon nanotube sponge

A technology of carbon nanotube sponge and nickel oxide carbon, which is applied in the direction of carbon nanotubes, nanocarbon, nanotechnology, etc., can solve the problems of being unsuitable for mass production, harsh reaction conditions, complicated process, etc., and achieves convenient operation and mild reaction conditions , The effect of simple preparation process and device

Active Publication Date: 2019-03-05
SHENZHEN NANOTECH PORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing methods for preparing carbon nanotube sponges mainly include substrate method, floating catalytic method and chemical vapor deposition method, which have the problems of complex process, harsh reaction conditions and low yield. The weight ratio of the catalyst used is up to 40-60, which is not suitable for mass production

Method used

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  • Preparation method and device of carbon nanotube sponge
  • Preparation method and device of carbon nanotube sponge
  • Preparation method and device of carbon nanotube sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 2 kg of citric acid in 8 kg of water to form a citric acid solution, then soak nickel oxide in the citric acid solution for 5 hours, and dry at 500°C for 0.8 hours to obtain a nickel oxide carbon catalyst, then add 10 mg of nickel oxide Put the carbon catalyst in the tube furnace 10, open the valve of the nitrogen tank to fill the reaction furnace 10 with nitrogen, under the protection of nitrogen, start the thermostat 20 and control the temperature of the reaction furnace 10 to rise to 700°C, and then open the propylene Valves of the tank 40 and the hydrogen tank 50 and adjust the flowmeter 60 of the propylene tank 40 and the hydrogen tank 50 so that the flow ratio of hydrogen to propylene is 0.2:1. After 1 hour of reaction, close the propylene tank 40, the hydrogen tank 50 and the nitrogen tank valve, and close the temperature controller 20, the reaction furnace 10 is naturally cooled to room temperature to obtain 1.5 grams of product. The macroscopic structu...

Embodiment 2

[0024] Dissolve 1 kg of citric acid in 9 kg of water to form a citric acid solution, then soak nickel oxide in the citric acid solution for 3 hours, and dry at 200°C for 1 hour to obtain a nickel oxide carbon catalyst, and then add 15 mg of nickel oxide The carbon catalyst is placed in the tube furnace 10, the valve of the nitrogen tank is opened, and the reaction furnace 10 is filled with nitrogen. Under the protection of nitrogen, the temperature controller 20 is started and the temperature of the reaction furnace 10 is raised to 500° C., and then the propylene Valves of the tank 40 and the hydrogen tank 50 and adjust the flowmeter 60 of the propylene tank 40 and the hydrogen tank 50 so that the flow ratio of hydrogen to propylene is 0.5:1. After reacting for 0.5 hours, close the propylene tank 40, the hydrogen tank 50 and the nitrogen tank valve, and close the temperature controller 20, allowing the reaction furnace 10 to cool down to room temperature naturally, after testin...

Embodiment 3

[0026] Dissolve 5 kg of citric acid in 5 kg of water to form a citric acid solution, then soak nickel oxide in the citric acid solution for 10 hours, and dry at 900°C for 0.2 hours to obtain a nickel oxide carbon catalyst, then add 5 mg of nickel oxide The carbon catalyst is placed in the tube furnace 10, the valve of the argon gas tank is opened, and the reaction furnace 10 is filled with argon gas. Under the protection of the argon gas, the temperature controller 20 is started and the temperature of the reaction furnace 10 is controlled to rise to 900° C., and then Open the valves of the propylene tank 40 and the hydrogen tank 50 respectively and adjust the flow meters 60 of the propylene tank 40 and the hydrogen tank 50 so that the flow ratio of hydrogen to propylene is 0.05:1. After 2 hours of reaction, close the propylene tank 40 and the hydrogen tank 50 and the valve of the argon gas tank, and the temperature controller 20 was closed, so that the reaction furnace 10 was n...

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Abstract

The invention relates to a preparation method for a carbon nanotube sponge. The preparation method comprises the following steps: a, soaking nickel oxide in a citric acid solution with a weight percentage of 10 to 50 percent for 1 to 10 hours, and drying at 200 to 900 DEG C for 0.2 to 1 hour to obtain a nickel oxide carbon catalyst; b, putting the nickel oxide carbon catalyst prepared in step a to a reaction furnace, then introducing nitrogen or inert gas to the reaction furnace via a gas carrier tank, raising the temperature in the reaction furnace to 500 to 900 DEG C via a temperature controller under the protection of nitrogen or inert gas, then enabling a flow ratio of nitrogen introduced into the reaction furnace to propylene introduced into the reaction furnace to (0.05 to 0.5): 1 by regulating a flowmeter of a hydrogen tank and a flowmeter of an propylene tank, reacting for 0.5 to 2 hours, and naturally cooling to room temperature to obtain the carbon nanotube sponge. The invention also provides a method for implementing the preparation method for the carbon nanotube sponge. The carbon nanotube sponge prepared by the preparation method has the dispersibility superior to that of conventional carbon nanotubes, and is high in yield and suitable for batch production. The preparation method and the preparation device also have the characteristics of simpleness and convenience in operation, mild reaction conditions and the like.

Description

【Technical field】 [0001] The invention relates to the preparation of carbon nanotubes, in particular to a method and device for preparing carbon nanotube sponges with simple process, high output and suitable for mass production. 【Background technique】 [0002] Carbon nanotubes have excellent properties such as high specific modulus, high specific strength, and high conductivity. Reinforced materials have received extensive research and attention in recent years. However, in general, the carbon nanotubes obtained have a microscopic structure, which is powdery or granular on a macroscopic level, and has poor dispersion. It is usually necessary to use mechanical damage grinding to disperse or destroy the grafted functional groups of the carbon tube microstructure. Not only the preparation process is complicated, but also the performance of carbon nanotubes cannot be brought out, which limits the application of carbon nanotubes. [0003] At present, in addition to the powdery ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/162B82Y30/00
CPCB82Y30/00C01B2202/32C01P2004/03C01P2004/61C01P2006/12
Inventor 郜天宇
Owner SHENZHEN NANOTECH PORT