Catalyst pretreatment with aldehyde in an oxygenate to olefins reaction system
US7132581B2 · kind B2 · utility
1Cited by
15References
75Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 12, 2003 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jul 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention concerns processes for converting oxygenates to olefins that include a step of pretreating catalyst used in the conversion reaction. A fresh or regenerated metalloaluminophosphate molecular sieve, which is low in carbon content, is pretreated with an aldehyde. The aldehyde forms a hydrocarbon co-catalyst within the pore structure of the molecular sieve, and the pretreated molecular sieve containing the co-catalyst is used to convert oxygenate to an olefin product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.