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US 12,606,513 B2Granted
Formate production method, formic acid production method, and antifreezing agent production method
AssigneeNitto Denko Corporation
InventorsMakoto Hirano, Hirokazu Matsuda, Evgeny Alexandrovich Pidko, Georgy Alexandrovich Filonenko, Christophe Rebreyend
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Abstract
The invention relates to a method for producing a formate, the method including a first step of reacting hydrogen with carbon dioxide, a hydrogen carbonate or a carbonate using a catalyst in the presence of a solvent to form a formate in the reaction liquid, wherein the reaction is a two-phase system in which an organic phase and an aqueous phase are present in a separated state in the solvent, and a base concentration in the reaction is 2.5 mol/L or more.
Claims11
A method for producing a formate, the method comprising:
- a first step of reacting hydrogen with carbon dioxide, a hydrogen carbonate or a carbonate using a catalyst in the presence of a solvent to form the formate in a reaction liquid,
- wherein the reaction is a two-phase system in which an organic solvent and an aqueous solvent are present in a separated state in the solvent,
- wherein, in the first step, a quaternary ammonium salt is used as a phase transfer catalyst, and
- provided that, when the first step reacts hydrogen with a hydrogen carbonate or a carbonate, a concentration of the hydrogen carbonate or the carbonate in the reaction is 2.5 mol/L or more.
1 more element
Dependencies are inferred from the claim text.