Selective dealumination of zeolites
US4654454A · kind A · utility
5Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1986 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Jun 13, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/70
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a process for selective dealumination, particularly surface dealumination of zeolites by sequential ion-exchange and calcination. The process is selective in the sense that the aluminum atoms within the pore structure of the zeolite remain virtually intact. The surface dealuminated zeolites can be used, after loading with a gallium compound, as catalysts in hydrocarbon conversion reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.