FIELD: industrial organic synthesis. SUBSTANCE: dimethylnaphthalene or mixture of dimethylnaphthalenes are produced in liquid phase process by dehydrogenation of mixture of dimethyltetralins in presence of precious metal on carrier as dehydrogenation catalyst at elevated temperature, advantageously 200-300 C, and pressure high enough to maintain starting material in liquid state. EFFECT: increased yield and selectivity. 9 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DIMETHYLTETRALINE SYNTHESIS | 1990 |
|
RU2024471C1 |
| METHOD FOR SELECTIVELY PRODUCING DIMETHYLNAPHTHALENES | 1989 |
|
RU2126782C1 |
| METHOD FOR PREPARING DIMETHYL-1,5-NAPHTHALENE DICARBOXYLATE | 2001 |
|
RU2270830C2 |
| 1-5-DIMETHYLTETRALIN PRODUCING METHOD | 0 |
|
SU628810A3 |
| METHOD OF PREPARING AROMATIC CARBOXYLIC ACIDS AND METHOD OF PREPARING PURIFIED NAPHTHALENEDICARBOXYLIC ACID | 1993 |
|
RU2128641C1 |
| METHOD (Versions) AND PLANT FOR PRODUCTION OF AROMATIC CARBOXYLIC ACIDS | 1995 |
|
RU2171798C2 |
| PROCESS FOR PREPARING 2,6-DIETHYLNAPHTHALENE | 1990 |
|
RU2034821C1 |
| METHOD OF PREPARING NAPHTHALENEDICARBOXYLIC ACID DIALKYL ESTER | 1993 |
|
RU2123996C1 |
| CATALYTIC SYSTEM FOR POLYMERIZATION OF OLEFINS | 1990 |
|
RU2114864C1 |
| METHOD OF PRODUCING SYNTHETIC GAS (VERSIONS) | 1995 |
|
RU2125538C1 |
