Catalyst treatment useful for aromatics conversion process
US7544849B2 · kind B2 · utility
17Cited by
33References
4Claims
0Family size
Assignee
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Key dates
| Filing date | May 22, 2008 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | May 22, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for preparing a transalkylation catalyst, the catalyst itself, and a transalkylation process for using the catalyst are herein disclosed. The catalyst comprises rhenium metal on a solid-acid support such as mordenite, which has been treated with a sulfur-based agent. Such treatment reduces the amount of methane produced by metal hydrogenolysis in a transalkylation process wherein heavy aromatics like A9+ are reacted with toluene to produce xylenes. Reduced methane production relative to total light ends gas production results in lower hydrogen consumption and lower reactor exotherms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.