Synthesis of hydrogen bis(fluorosulfonyl)imide
AssigneeBoulder Ionics Corporation
InventorsJoseph Carl Poshusta, Jerry Lynn Martin, Rajendra P. Singh
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Abstract
The invention provides a method for producing hydrogen bis(fluorosulfonyl)imide (HFSI) by reacting hydrogen bis(halosulfonyl)imide (HXSI) with hydrogen fluoride, where each X is independently a nonfluoro-halide, such as Cl, Br, or I.
Claims20
A method for producing a high yield of hydrogen bis(fluorosulfonyl)imide (HFSI) from hydrogen bis(halosulfonyl)imide (HXSI) using hydrogen fluoride, said method comprising reacting HXSI with HF and during the reaction, selectively removing HX that is produced in the reaction to produce HFSI in at least 80% yield, wherein each X is independently Cl, Br, or I.
A process for producing hydrogen bis(fluorosulfonyl)imide (HFSI) from hydrogen bis(chlorosulfonyl)imide (HCSI), said process comprising:
- reacting HCSI with HF under HF refluxing condition
- and selectively removing hydrochloric acid (HCl) that is formed in the reaction, wherein said process produces at least 80% yield of HFSI.
A method for producing a high yield of hydrogen bis(fluorosulfonyl)imide (HFSI) from hydrogen bis(halosulfonyl)imide (HXSI) using hydrogen fluoride, said method comprising reacting HXSI with HF under HF refluxing condition to produce HFSI in at least 80% yield, wherein each X is independently Cl, Br, or I.
Dependencies are inferred from the claim text.