Selective aromatics isomerization process
US8022263B2 · kind B2 · utility
0Cited by
7References
2Claims
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Key dates
| Filing date | Nov 19, 2008 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Mar 13, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/83
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using a catalyst comprising a zeolite having specific particle-size characteristics, a platinum-group metal and a silica binder. A relatively minimal amount of hydrogen is supplied to the process on a once-through basis, resulting in low saturation of aromatics while achieving effective xylene isomerization with reduced processing costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.