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Catalyst for preparing bundled carbon nanotubes, preparation method thereof, and bundled carbon nanotubes

A technology for carbon nanotubes and catalysts is applied to cluster carbon nanotubes and catalysts for preparing cluster carbon nanotubes. In the field of preparation, the problems of inability to guarantee, harsh conditions and high production costs can be solved, and the method is simple, Easy-to-disperse, easy-to-manipulate effects

Active Publication Date: 2020-07-17
哈尔滨万鑫石墨谷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above method belongs to the traditional method for preparing carbon nanotubes. In the preparation process of the catalyst, the process conditions need to be precisely controlled, the conditions are harsh, the production cost is high, and it cannot be guaranteed that all are oriented carbon nanotubes.

Method used

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  • Catalyst for preparing bundled carbon nanotubes, preparation method thereof, and bundled carbon nanotubes
  • Catalyst for preparing bundled carbon nanotubes, preparation method thereof, and bundled carbon nanotubes

Examples

Experimental program
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Embodiment 1

[0058] This embodiment provides a carbon nanotube with a special shape, that is, a bundled carbon nanotube, which is composed of all aligned carbon nanotubes, and the diameter of the aligned carbon nanotubes is 5 nm to 5 nm. 100nm, length 5μm~100μm, specific surface area 140m 2 / g~300m 2 / g, bulk density is 0.01g / cm 3 ~0.1g / cm 3 .

[0059] Preparation:

[0060] (1) 30 g of polyvinyl alcohol, 10 g of a mixture of ferric chloride and magnesium chloride were dissolved and dispersed in 60 g of water by high-speed stirring to obtain a dispersion;

[0061] (2) Transfer the dispersion liquid to the syringe through the peristaltic pump, switch on the high-voltage power supply, and perform electrospinning, wherein the distance between the needle of the syringe and the receiving device is 20cm, the voltage is 10kv, and the flow rate of the dispersion liquid is 10ml / h ;

[0062] (3) Calcining the collected electrospinning product at a temperature of 300° C. with nitrogen gas for 60...

Embodiment 2

[0066] This embodiment provides a carbon nanotube with a special shape, that is, a bundled carbon nanotube. The bundled carbon nanotube is composed of all aligned carbon nanotubes, wherein the diameter of the aligned carbon nanotube is 5 nm to 100 nm. , with a length of 5 μm to 100 μm and a specific surface area of ​​140m 2 / g~300m 2 / g, bulk density is 0.01g / cm 3 ~0.1g / cm 3 .

[0067] Preparation:

[0068] (1) 5 g of pitch, 15 g of a mixture of aluminum oxide and molybdenum nitrate were dissolved and dispersed in 65 g of tetrahydrofuran by high-speed stirring to obtain a dispersion;

[0069] (2) The dispersion is transferred to the syringe through the peristaltic pump, connected to the high-voltage power supply, and electrospun, wherein the distance between the needle of the syringe and the receiving device is 15cm, the voltage is 20kv, and the flow rate of the dispersion is 20ml / h ;

[0070] (3) Calcining the collected electrospinning product with air at a temperature ...

Embodiment 3

[0073] This embodiment provides a carbon nanotube with a special shape, that is, a bundled carbon nanotube. The bundled carbon nanotube is composed of all aligned carbon nanotubes, wherein the diameter of the aligned carbon nanotube is 5 nm to 100 nm. , with a length of 5 μm to 100 μm and a specific surface area of ​​140m 2 / g~300m 2 / g, bulk density is 0.01g / cm 3 ~0.1g / cm 3 .

[0074] Preparation:

[0075] (1) 10 g of polyoxyethylene and 20 g of nickel nitrate were dissolved and dispersed in 80 g of deionized water by high-speed stirring to obtain a dispersion;

[0076] (2) The dispersion is transferred to the syringe through the peristaltic pump, connected to the high-voltage power supply, and electrospun, wherein the distance between the needle of the syringe and the receiving device is 25cm, the voltage is 25kv, and the flow rate of the dispersion is 50ml / h ;

[0077] (3) Calcining the collected electrospinning product with air at a temperature of 400° C. for 45 minu...

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Abstract

The invention discloses a catalyst used for preparing a bundle cluster-shaped carbon nanotube, preparation methods of the catalyst and the bundle cluster-shaped carbon nanotube, and the bundle cluster-shaped carbon nanotube. The preparation method of the catalyst comprises the following steps: (1) dispersing organic matter and a metal precursor into a solvent to obtain a dispersion liquid; (2) performing electrospinning by adopting the dispersion liquid obtained by the step (1); and (3) performing heat treatment on an electrospun product obtained by the step (2) under a non-oxidizing atmosphere to obtain the catalyst, wherein the metal precursor is a metal salt and / or a metal oxide. The catalyst is used for preparing the carbon nanotube, the bundle cluster-shaped carbon nanotube can be obtained, and the bundle cluster-shaped carbon nanotube is composed of all oriented carbon nanotubes.

Description

technical field [0001] The invention belongs to the field of carbon nanomaterials, composite materials and new energy, and relates to a catalyst, its preparation method and application, in particular to a catalyst for preparing bundle-like carbon nanotubes, its preparation method and bundle-like carbon nanotubes. Background technique [0002] Carbon nanotubes were discovered by the Japanese scientist Iijima in the scanning electron microscope in the 1990s and reported publicly in the form of literature. In fact, in the early 1970s or early 1980s, people knew the existence of this fibrous graphite material with multiple graphite layers. Tates and Baker (GB1469930A1, 1977 and EP56004A2, 1982) first Deposits of fibrous carbon produced by the catalytic decomposition of hydrocarbons are first described, but not further detailed, including their diameters, etc. [0003] Carbon nanotube materials have very excellent electrochemical and mechanical properties, which makes them widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J23/755B01J23/28B01J23/745B01J21/18
Inventor 时浩袁国辉杨斌梅佳李然方振辉刘智良黄友元马芳晴
Owner 哈尔滨万鑫石墨谷科技有限公司