Method of making 2,6-dimethylnaphthalene from other dimethylnaphthalene isomers and from dimethyltetralins/dimethyldecalins with a methyl group on each ring
US6015930A · kind A · utility
8Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1997 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Jul 14, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention discloses a method of making 2,6-dimethylnaphthalene from any DMN with one methyl on each ring in a two-step hydroisomerization/dehydrogenation process. The catalyst used in the hydroisomerization step is an acidic catalyst such as a silica aluminum catalyst with a hydrogenation/dehydrogenation metal. The catalyst used in the dehydrogenation step is a reforming type catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.