Method for producing lithium halide compound
AssigneeIdemitsu Kosan Co., Ltd.
InventorsYusuke Iseki, Takashi Nakagawa, Toyohiko Iwai
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Abstract
The present invention relates to a method for producing a lithium halide compound, capable of industrially advantageously producing a lithium halide compound having a low water content, particularly lithium bromide and lithium iodide, at a high reaction efficiency without accompanying a step of directly removing water, and the method including mixing lithium sulfide, a halogen molecule of at least one of bromine and iodine, and a first solvent; and removing the first solvent, wherein the first solvent is a solvent that dissolves a lithium halide containing the same halogen element as the halogen molecule.
Claims14
A method for producing a lithium halide complex, comprising:
- mixing lithium sulfide, a halogen molecule of at least one of bromine and iodine, and a second solvent;
- subsequently adding and mixing the first solvent to obtain a lithium halide complex;
- and
- subsequently removing the first solvent and the second solvent;
- wherein:
- the first solvent has a solubility of lithium bromide and lithium iodide of 1 g/L or more;
- the first solvent is an aprotic solvent having at least one functional group selected from an ester group and an amino group;
- the second solvent has a solubility of lithium bromide and lithium iodide of less than 1 g/L;
- the first solvent is added in an amount of 100 to 3,000 mL per 1 kg of a total amount of lithium sulfide and the halogen molecule;
- and
- the second solvent is added in an amount of 3,500 mL to 10,000 mL per 1 kg of the total amount of lithium sulfide and the halogen molecule.
Dependencies are inferred from the claim text.