Manufacture of synthetic zeolites
US4016246A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1972 |
| Grant date | Apr 5, 1977 |
| Priority date | — |
| Expiry date | Aug 30, 1992 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a method of preparing zeolite Y of high degree of purity and having a silica to alumina molar ratio of from greater than 3 up to about 6.2 which comprises preparing an aluminosilicate reaction mixture having oxide molar ratios of SiO.sub.2 /Al.sub.2 O.sub.3, Na.sub.2 O/SiO.sub.2 and H.sub.2 O/Na.sub.2 O lying within specified ranges, at least part of the siliceous component of the reaction mixture being a particular hydrated sodium metasilicate and then heating the reaction mixture until zeolite Y crystallizes from the reaction mixture, the particular hydrated sodium metasilicate being defined by its ability to form substantially pure zeolite X under specified conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.