Adsorption process for paraxylene purifacation using Cs SSZ-25 adsorbent with benzene desorbent
US6281406A · kind A · utility
9Cited by
5References
17Claims
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Key dates
| Filing date | Mar 31, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Mar 31, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An adsorption process for the recovery of paraxylene from mixed xylenes using a molecular sieve adsorbent comprising SSZ-25, MCM-22, PSH-3, ERB-1, or ITQ-1. A preferred desorbent for the process is benzene. A hybrid adsorption/crystallization PX purification process is also described using the molecular sieve adsorbent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.