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Method for producing fluorine compounds

A technology of fluorine compounds and halogen compounds, applied in nitrogen compounds, chemical instruments and methods, nitrogen and non-metallic compounds, etc., can solve problems such as inability to suppress manufacturing costs

Inactive Publication Date: 2015-09-02
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the manufacturing methods disclosed in each document, HFS 1(HN(SO 2 Cl) 2 ) takes 48 to 72 hours for fluorination
Therefore, KN(SO 2 f) 2 or NaN(SO 2 f) 2 Manufacturing costs are kept low

Method used

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  • Method for producing fluorine compounds
  • Method for producing fluorine compounds

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Embodiment Construction

[0036] Reference expression (A), pair by HN (SO 2 Cl) 2 Synthetic KN(SO 2 F) 2 The manufacturing method is described.

[0037] Formation of HN(SO 2 Cl) 2 . Subsequently, the HN(SO 2 Cl) 2 Add dropwise to excess powdered KF. When KF contains moisture, water and HN(SO 2 Cl) 2 May react with each other to undergo hydrolysis. Therefore, when adding HN(SO 2 Cl) 2 Beforehand, remove moisture from KF in advance. Then, make HN(SO 2 Cl) 2 react with KF to form KN(SO 2 Cl)(SO 2 F) and HCl. The reaction proceeds solvent-free and is thus complete in about 2 to about 3 minutes. Will pass HN(SO 2 Cl) 2 The product formed by adding dropwise to powdered KF, that is, containing KN(SO 2 Cl)(SO 2 The product of F) and KF is called Intermediate A.

[0038] Subsequently, water as a solvent was added to the intermediate product A. KN(SO 2 Cl)(SO 2 F) Does not react with water so that no products resulting from hydrolysis are formed. On the other hand, KF is dissolved in ...

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Abstract

KN(SO2F)2 is synthesized by adding HN(SO2Cl)2 dropwise to KF to form an intermediate product, and then allowing the intermediate product and KF to react with each other in an aqueous solvent.

Description

technical field [0001] The present application relates to a method for producing a fluorine compound, wherein the fluorine compound is synthesized from a chlorine compound. Background technique [0002] Lithium-ion secondary batteries use an electrolytic solution. In recent years, as the supporting salt of the electrolyte, imides such as LiN(SO 2 F) 2 Having attention. In addition, using KN(SO 2 F) 2 or NaN(SO 2 F) 2 Or their mixture as molten salt for molten salt battery. In order for a molten salt battery to operate, the molten salt battery needs to be heated to a temperature at which the molten salt melts. KN(SO 2 F) 2 or NaN(SO 2 F) 2 Or their mixtures have a melting point lower than that of conventional molten salts. Therefore, materials that lower the operating temperature of molten-salt batteries are also attracting attention. [0003] Patent Document 1 discloses the use of pyridine as a catalyst and the fluorination of the reaction raw materials in an a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/086
CPCH01M10/0568Y02E60/122C01B21/093C01B21/086H01M10/0525Y02E60/10
Inventor 福永笃史酒井将一郎新田耕司山口笃真岛正利稻泽信二
Owner SUMITOMO ELECTRIC IND LTD
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