Dealumination of aluminosilicate zeolites
US4753910A · kind A · utility
23Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method of removing tetrahedral aluminum from a aluminosilicate zeolite, the zeolite is treated with an aqueous fluorosilicate solution which reacts with tetrahedral aluminum in said zeolite to produce water-insoluble aluminum fluoride. In addition, during or after the aluminum removal, the zeolite is contacted with an aqueous solution containing a water-soluble fluoride of reacting with the insoluble aluminum fluoride to produce a water-soluble species.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.