FIELD: chemistry.
SUBSTANCE: invention relates to a process for the preparation of methyl acetate by carbonylation of dimethyl ether with carbon monoxide in the presence of hydrogen and a zeolite catalyst, in which at the first step carbonylation is carried out at a molar ratio of the amount of carbon monoxide to the amount of hydrogen of at least 1, and at the second and next step, carbonylation is carried out at a molar ratio of the amount of hydrogen to the amount of carbon monoxide greater than 1.
EFFECT: invention also relates to a method for improving the performance of a zeolite catalyst in the preparation of methyl acetate by carbonylation of dimethyl ether with carbon monoxide in the presence of hydrogen and said catalyst.
30 cl, 6 ex, 8 tbl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CARBONYLATION METHOD | 2014 |
|
RU2658820C2 |
| METHOD OF ZEOLITE CATALYSTS TREATMENT | 2014 |
|
RU2689390C2 |
| CARBONYLATION METHOD | 2014 |
|
RU2658005C2 |
| CARBONYLATION CATALYST AND METHOD | 2014 |
|
RU2696266C2 |
| METHOD FOR DIMETHYL ETHER CARBONYLATION | 2018 |
|
RU2771742C2 |
| CARBONYLATION METHOD FOR PRODUCING METHYL ACETATE | 2017 |
|
RU2739320C2 |
| CARBONYLATION METHOD USING A PRETREATED ZEOLITE CATALYST | 2016 |
|
RU2734824C2 |
| IMPROVED CATALYTIC CHARACTERISTICS IN METHODS OF PRODUCING ACETIC ACID | 2015 |
|
RU2704319C2 |
| METHOD FOR CARBONYLATION OF DIMETHYL ETHER | 2008 |
|
RU2478609C2 |
| METHOD FOR CARBONYLATION OF DIMETHYL ETHER | 2008 |
|
RU2469018C2 |
