Inventors:
Masahiro Motoyuki - Osaka, JP
Koji Yamamoto - Kobe, JP
Shingo Yoshida - Osaka, JP
Seiichi Yamamoto - Kobe, JP
Ajit Vishwanath Sapre - Moorestown NJ
John Paul Mc Williams - Woodbury NJ
Susan Patricia Donnelly - Kingwood TX
Stuart Damon Hellring - Pittsburgh PA
Assignee:
Kabushiki Kaisha Kobe Seiko Sho. - Kobe
Mobil Oil Corporation - Fairfax VA
International Classification:
C07C 522, C08G 6306
Abstract:
The present invention relates to a method of preparing 2,6-dimethylnaphthalene from a feed stream that contains hydrocarbons which contain dimethylnaphthalene isomers. The method includes the following steps:
I. distillation and concentration of the dimethylnaphthalene isomers from the feed stream, to form a dimethylnaphthalene fraction,
II. isomerization of the dimethylnaphthalene fraction to enrich the dimethylnaphthalene fraction in 2,6-dimethylnaphthalene, to form a 2,6-enriched dimethylnaphthalene fraction,
III. purification of 2,6-dimethylnaphthalene from the 2,6-enriched dimethylnaphthalene fraction,
wherein step II is conducted in the presence of a catalyst composition containing a synthetic zeolite characterized by an X-ray diffraction pattern including interplanar d-spacing (. ANG. )
12. 36. +-. 10. 4
11. 03. +-.