FIELD: petrochemistry.
SUBSTANCE: invention relates to a method for producing N-methyl-2-pyrrolidone, which is widely used in the oil refining, petrochemical, polymer and paint industries, as well as in the production of pesticides and pigments. The proposed method for producing N-methyl-2-pyrrolidone is carried out in the liquid phase by the interaction of gamma-butyrolactone with methylamine in the presence of a zeolite catalyst at elevated temperature and pressure, followed by isolation of the target product by distillation. The process is carried out at a temperature of 240-270°C and a pressure of 5-10 atm on a zeolite catalyst faujasite structure comprising 1-3 wt.% zirconium.
EFFECT: producing N-methyl-2-pyrrolidone with a high yield, selectivity and conversion of gamma-butyrolactone while extending the time of active operation of the catalyst.
1 cl, 1 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING N-METYHLPYRROLIDONE | 0 |
|
SU1558903A1 |
| METHOD OF SYNTHESIS OF 2,6-DI-TERTIARY-BUTYL-4-METHYLPHENOL | 1998 |
|
RU2147570C1 |
| WORKING ELECTROLYTE FOR CONDENSER, METHOD OF ITS PREPARATION AND ALUMINUM ELECTROLYTIC CAPACITOR WITH SUCH ELECTROLYTE | 2019 |
|
RU2715998C1 |
| METHOD OF GAMMA-BUTYROLACTONE SYNTHESIS | 1993 |
|
RU2035458C1 |
| WORKING ELECTROLYTE FOR CONDENSER, METHOD OF ITS PREPARATION AND ALUMINUM ELECTROLYTIC CAPACITOR WITH SUCH ELECTROLYTE | 2019 |
|
RU2716491C1 |
| METHOD FOR PREPARING ZEOLITE OF MTT STRUCTURE TYPE | 2019 |
|
RU2740447C1 |
| METHOD OF PRODUCING CYCLOPENTANONE | 2010 |
|
RU2448945C1 |
| METHOD OF PRODUCING UNSYMMETRICAL DIMETHYLHYDRAZINE | 2018 |
|
RU2687064C1 |
| WORKING ELECTROLYTE FOR CONDENSER, METHOD OF ITS PREPARATION AND ALUMINUM ELECTROLYTIC CAPACITOR WITH SUCH ELECTROLYTE | 2019 |
|
RU2713639C1 |
| PROCESS FOR PREPARING CYCLOHEXADIENE-1,3 OR METHYLCYCLOHEXADIENES-1,3 | 0 |
|
SU1133253A1 |
