Catalytic conversion of polycyclic aromatics into xylenes
US6972348B2 · kind B2 · utility
18Cited by
24References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Apr 29, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A catalyst, and a process for using the catalyst, that effectively converts and transalkylates indane and C10 and heavier polycyclic aromatics into C8 aromatics is herein disclosed. The catalyst comprises a solid-acid support such as mordenite plus a metal component such as rhenium. The catalyst provides excellent conversion of such heavy aromatic species as naphthalene, which is also observed by a decrease in the ending-boiling-point of a hydrocarbon stream passed over the catalyst. The same catalyst is also effective for transalkylation of lighter aromatics, thus yielding a valuable xylenes product stream out of the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.