Preparation method and preparation device of graphite fluoride

A technology of fluorinated graphite and graphite, which is applied in the field of preparation of fluorinated graphite, can solve the problems of uneven temperature distribution in the reaction system, severe partial reaction of fluorinated graphite, and high fluorination efficiency, and achieve a stable and safe reaction environment and low production costs , High fluorination efficiency

Active Publication Date: 2017-06-23
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a preparation method of fluorinated graphite in order to overcome the problems of severe partial reaction, uneven temperature distribution and large fluctuation of reaction system temperature in the preparation of fluorinated graphite by existing gas-solid reaction. Preparation device
In the preparation method provided by the present invention, the temperature of the reaction system is easy to control, the temperature fluctuation is s

Method used

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  • Preparation method and preparation device of graphite fluoride
  • Preparation method and preparation device of graphite fluoride
  • Preparation method and preparation device of graphite fluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 prepares the device of graphite fluoride

[0034] Such as figure 1Shown, a kind of device for preparing graphite fluoride provided by the present invention, it comprises reaction system, gas supply system and tail gas treatment system; Wherein, reaction system and gas supply system pass through the trachea (2 ) connection; the reaction system and the tail gas treatment system are connected by a trachea (4) with a tail gas valve (5); the reaction system includes a reaction kettle (8), a heating furnace (1), and the reaction kettle (8) is connected with a pressure meter (6) and a thermometer (7); the gas supply system includes an argon gas storage tank (10), a special gas cabinet (11) and a gas mass flowmeter (12), and the gas mass flowmeter (12) is connected to the argon gas flow meter (12) respectively. The gas storage tank (10) is connected with the special gas cabinet (11), wherein the special gas cabinet (11) includes a gas storage tank (9) for storing ...

Embodiment 2

[0042] Embodiment 2 prepares the device of graphite fluoride

[0043] Such as figure 1 Shown, a kind of device for preparing graphite fluoride provided by the present invention, it comprises reaction system, gas supply system and tail gas treatment system; Wherein, reaction system and gas supply system pass through the trachea (2 ) connection; the reaction system and the tail gas treatment system are connected by a trachea (4) with a tail gas valve (5); the reaction system includes a reaction kettle (8), a heating furnace (1), and the reaction kettle (8) is connected with a pressure meter (6) and a thermometer (7); the gas supply system includes an argon gas storage tank (10), a special gas cabinet (11) and a gas mass flowmeter (12), and the gas mass flowmeter (12) is connected to the argon gas flow meter (12) respectively. The gas storage tank (10) is connected with the special gas cabinet (11), wherein the special gas cabinet (11) includes a gas storage tank (9) for storing...

Embodiment 3

[0051] Embodiment 3 prepares the device of graphite fluoride

[0052] Such as figure 1 Shown, a kind of device for preparing graphite fluoride provided by the present invention, it comprises reaction system, gas supply system and tail gas treatment system; Wherein, reaction system and gas supply system pass through the trachea (2 ) connection; the reaction system and the tail gas treatment system are connected by a trachea (4) with a tail gas valve (5); the reaction system includes a reaction kettle (8), a heating furnace (1), and the reaction kettle (8) is connected with a pressure meter (6) and a thermometer (7); the gas supply system includes an argon gas storage tank (10), a special gas cabinet (11) and a gas mass flowmeter (12), and the gas mass flowmeter (12) is connected to the argon gas flow meter (12) respectively. The gas storage tank (10) is connected with the special gas cabinet (11), wherein the special gas cabinet (11) includes a gas storage tank (9) for storing...

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Abstract

The invention discloses a preparation method and a preparation device of graphite fluoride. The preparation method comprises the following steps of: (1) mixing a fluoride fused salt and graphite pretreated by hydrofluoric acid, and removing air and water in the reaction system by using an inert gas; and (2) heating and fusing the fluoride fused salt, introducing a mixed gas of fluorine gas and argon gas, and performing a reaction. The preparation method of the graphite fluoride in the invention has the advantages that the temperature of the reaction system is easy to control, and the temperature has a small fluctuation and a uniform distribution; the graphite is suspended in the fluoride fused salt in a liquid state for reaction, and the fluorine gas and the graphite are in uniform contact, thereby avoiding problems of too high temperature and even explosion due to violent local reaction and high heat release caused by nonuniform contact of the fluorine gas and the graphite in traditional graphite preparation processes; and fluoridation efficiency is high and production cost is low. The preparation device provided by the invention has the advantages of convenience to operate and easiness to control, and a reaction still has good resistance to corrosion and is capable of providing a stable and safe reaction environment in the preparation process of graphite fluoride.

Description

technical field [0001] The invention relates to a preparation method and a preparation device of fluorinated graphite. Background technique [0002] Graphite fluoride is a new type of functional material with a series of unique physical and chemical properties such as low surface energy and interlayer energy, high electrical polarity, good lubricity, and small thermal neutron absorption cross section. Oil, anti-fouling, waterproof and other aspects have been more and more widely used. [0003] The synthesis methods of graphite fluoride include high temperature gas phase synthesis method, low temperature catalytic synthesis method and solid phase synthesis method. The low-temperature catalytic synthesis method is to react graphite with pentahalide to form graphite interlayer compound, and then react with fluorine gas at low temperature to form fluorinated graphite. The synthesis temperature of the method is low, and the safety is high, but the process is complex, the operat...

Claims

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Application Information

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IPC IPC(8): C01B32/21
CPCC01P2002/72C01P2002/82
Inventor 孙理鑫牛永生胡聪伟窦强李晴暖
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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