Patent ID: 6018087
Filing Date: 2000-01-25
Classification: C07C,C08G

Abstract:
A process for producing 2,6-dimethylnaphthalene from a feed stream comprising hydrocarbons which contain dimethylnaphthalene isomers comprising the following steps:I. distillation and concentration of said dimethylnaphthalene isomers from said feed stream, to form a dimethylnaphthalene fraction,II. isomerization of said dimethylnaphthalene fraction to enrich said dimethylnaphthalene fraction in 2,6-dimethylnaphthalene, to form a 2.6-enriched dimethylnaphthalene fraction,III. purification of 2,6-dimethylnaphthalene from said 2,6-enriched dimethylnaphthalene fraction,wherein step II is conducted in the presence of a catalyst composition comprising a synthetic zeolite characterized by an X-ray diffraction pattern including interplanar d-spacing (.ANG.)12.36.+-.0.411.03.+-.0.28.83.+-.0.146.18.+-.0.126.00.+-.0.104.06.+-.0.073.91.+-.0.013.42.+-.0.06,wherein said purification comprises crystallization under pressure.