AEI-Type zeolite, its synthesis and its use in the conversion of oxygenates to olefins
US7008610B2 · kind B2 · utility
21Cited by
3References
47Claims
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Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Dec 20, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A crystalline material is described that has an AEI framework type, wherein the material, in its calcined, anhydrous form, has a composition involving the molar relationship:(n)X2O3:YO2,wherein X is a trivalent element, Y is a tetravalent element n is from 0 to less than 0.01. The material is normally synthesized in a halide, typically a fluoride, medium and exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.