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US 2025/0026712 A1Published application
Method for producing carbonate
AssigneeLotte Chemical Corporation
InventorsWang Gyu Kim, Jin Hyung Kim, Mi Hwa Baek, Jong Myung Choi, Eun Hye Han
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Abstract
The present invention relates to a method for producing a carbonate. According to the method of the present invention, column plugging occurring in a producing process of a carbonate, specifically, a purification process, can be suppressed.
Claims6
A method for producing a carbonate comprising:
- a first step of producing a product containing ethyl methyl carbonate and diethyl carbonate by inducing transesterification in a raw material mixture containing dimethyl carbonate and ethanol in the presence of a catalyst;
- a second step of obtaining a distillation column overhead stream and a distillation column bottom stream by distilling the product in a distillation column;
- and
- a third step of filtering the distillation column bottom stream,
- wherein the distillation column bottom stream includes a catalyst with an average particle diameter (D50) of more than 1 μm.
2 more elements
Dependencies are inferred from the claim text.