Method for producing bis(fluorosulfonyl)imide salt, method for producing fluorosulfate, and method for producing bis(fluorosulfonyl)imide onium salt
AssigneeMitsubishi Materials Electronic Chemicals Co., Ltd.
InventorsTsunetoshi Honda, Takeshi Kamiya
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Abstract
According to the method for producing bis(fluorosulfonyl)imide salt of the present invention, the method for producing fluorosulfate, and the method for producing bis(fluorosulfonyl)imide onium salt, first, an aqueous solution is prepared by dissolving a mixed liquid containing bis(fluorosulfonyl)imide and fluorosulfonic acid in water. Then, the aqueous solution is neutralized with an alkaline compound, producing bis(fluorosulfonyl)imide salt and fluorosulfate. In the methods, bis(fluorosulfonyl)imide salt, fluorosulfate, and bis(fluorosulfonyl)imide onium salt can be obtained safely and easily.
Claims4
A method for producing bis(fluorosulfonyl)imide onium salt comprising:
- a step of dissolving, in which a mixed liquid containing bis(fluorosulfonyl)imide and fluorosulfonic acid is dissolved in water to prepare an aqueous solution;
- a step of neutralizing, in which the aqueous solution is neutralized by an alkali compound to prepare a neutralized solution;
- and
- a step of adding an onium compound to the neutralized solution.
Dependencies are inferred from the claim text.