Process for preparing a high silica faujasite aluminosilicate, ECR-4
US4714601A · kind A · utility
19Cited by
20References
3Claims
0Family size
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Key dates
| Filing date | May 4, 1984 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | May 4, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminosilicate characterized by having a faujasite structure, a silica to alumina mole ratio of at least six and bis-(2-hydroxyethyl)-dimethylammonium ions or other large tetra alkyl or hydroxy alkyl ammonium ions within the large cages of the aluminosilicate. This composition may be prepared by crystallization from an aged reaction mixture to an oxide of sodium, a tetra alkyl or hydroxy alkyl ammonium salt, water, a source of silica, a source of alumina and sodium aluminosilicate nucleating seeds in specified relative amounts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.