Silicoaluminophosphate molecular sieve
US6812372B2 · kind B2 · utility
71Cited by
20References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Aug 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of molecular sieves having AEI and CHA framework types, wherein said intergrown phase has an AEI/CHA ratio of from about 5/95 to 40/60 as determined by DIFFaX analysis, using the powder X-ray diffraction pattern of a calcined sample of said silicoaluminophosphate molecular sieve. It also relates to methods for its preparation and to its use in the catalytic conversion of methanol to olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.