Process for producing graphite fluoride by low-temperature intercalation method

Abstract

The invention relates to a process for producing graphite fluoride by a low-temperature intercalation method. The process comprises the following steps of: using antimony pentafluoride intercalated graphite and a fluorine-nitrogen gas mixture to produce graphite fluoride, wherein the fluorine and the nitrogen in the fluorine-nitrogen gas mixture is respectively 10% -30% and 70% - 90 % by mass percentage concentration, the reaction temperature ranges from 200 DEG C to 500 DEG C, and the pressure ranges from 100KPa (Kilopascal) to 300KPa. Then, using the fluorine-nitrogen gas mixture with fluorine and nitrogen respectively of 50% by mass percentage concentration, and antimony powder to directly react for preparing gaseous antimony pentafluoride, and adding the liquid antimony pentafluoride acquired by cooling and expanded graphite to a vacuum container in a mass ratio of 1:1.5 to1:9, controlling the temperature to be 100 DEG C to 150 DEG C, and reacting for more than 12 hours to acquire the antimony pentafluoride intercalated graphite. The graphite fluoride yield can reach 43%- 74%, and the production is safe; simultaneously, the fluorine-to-carbon ratio of the graphite fluoride can be controlled by regulating the reaction time to acquire the graphite fluoride with different fluorine-to-carbon ratios.

Description

Technical field [0001] The present invention is a chemical industry, involving a process that produces fluorine graphic graphite under low temperature, low -pressure, and low -heavy process, and specially involves a process of producing fluoride graphic graphite in a low -temperature insertion method. Background technique [0002] The scale of the high -tech product itself of fluorophytte gifda is difficult to produce. At the same time, due to the lack of corresponding application technology, the production process of fluorine graphite is relatively small.Qi phase method, solid phase method, plug -in reaction method, fluorine plasma synthesis method, and residual carbon method, of which the yield of fluorophytic goblene is about 20%, the solid phase method is about 15%, the plasma synthesis method is 10 to 10— 30%, the residual carbon method is about 10%. The yield of these methods is low and cannot adapt to scale production. Relatively speaking, the intervening reaction method m...

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Problems solved by technology

[0002] The large-scale production of graphite fluoride, a high-tech product, is difficult. At the same time, due to the lack of corresponding application technology, there are relatively few researches on the production process of graphite fluoride; there are usually five production methods of graphite fluoride, which are Gas-phase method, solid-phase method, intercalation reaction method, fluorine plasma synthesis method, and carbon residue method, among which the yield of graphite fluoride by gas-phase method is about 20%, that of solid-phase method is about 15%, and that of plasma synthesis method is 10%. -30%, and the carbon residue method is about 10%. The yield of these methods is low and cannot be adapted to scale production; relatively speaking, the intercalation reaction method conforms to the characteristics of continuous scale production, and the product performance index is easy to control in the production process. By controlling the reaction time and temperature, fluorinated graphite with different fluorine-to-carbon ratios can be obtained. However, the current domestic production technology of fluorinated graphite is mainly based on the high-temperature method. The yield of fluorinated graphite is low, and the equipment requirements are high, which has certain risks. properties, and the fluorocarbon ratio of the produced fluorinated graphite is not high

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