Process for the synthesis of silicoaluminophosphate molecular sieves
US6514899B1 · kind B1 · utility
9Cited by
49References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Mar 28, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention is directed to a method for making a silicoaluminophosphate (SAPO) molecular sieve from a reaction mixture comprising components present in amounts sufficient to form the SAPO, the reaction mixture having a first pH. The method comprises the steps of: adding an acid to the reaction mixture after the reaction mixture undergoes a change in pH from the first pH; and crystallizing the SAPO from the reaction mixture. The present invention is also directed to a silicoaluminophosphate molecular sieve made by this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.