Modified crystalline aluminosilicate zeolites and process for their preparation
US5389357A · kind A · utility
12Cited by
17References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1994 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jun 1, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the manufacture of a modified aluminosilicate zeolite is disclosed which includes contacting a starting zeolite in an aqueous phase with a dealuminating agent at a pH value of lower than 4 in the presence of a soluble silica. A novel zeolite composition is also disclosed which has increased acid and thermal stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.