Maintaining molecular sieve catalytic activity under water vapor conditions
US7015174B2 · kind B2 · utility
13Cited by
9References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2003 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Feb 25, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/951
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is directed to methods for protecting metalloaluminophosphate molecular sieves, particularly silicoaluminophosphate (SAPO) molecular sieves, from loss of catalytic activity due to contact with a gas containing water. The methods of the invention provide procedures that enable activated sieve to contact water vapor, within a certain range of time, temperature, and water partial pressure conditions, before the sieve becomes substantially deactivated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.