Xylene isomerization
US6028238A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1998 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Apr 14, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/068
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for isomerizing a feed which contains ethylbenzene and xylene, which process comprises the steps of: PA1 (a) contacting the feed under ethylbenzene conversion conditions with a particulate first catalyst component which comprises a molecular sieve having a constraint index of 1-12, the particles of said first catalyst component having a surface to volume ratio of about 80 to less than 200 inch.sup.-1 and the contacting step converting ethylbenzene in the feed to form an ethylbenzene-depleted product; and then PA1 (b) contacting the ethylbenzene-depleted product under xylene isomerization conditions with a second catalyst component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.