Preparation of zeolite
US6471940B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 27, 2000 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Sep 27, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B39/48
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is provided for preparing zeolite, particularly [Al]-SSZ-31, which comprises the steps of providing a mixture of a zeolite source, an aluminum-containing material, an organic structure directing substance, preferably at least one selected from the group consisting of N,N′-bis-triethyl-1,6-hexanediyl-diammonium dihydroxide, N,N′-bis-triethyl-1,7-heptanediyl-diammonium dihydroxide, N,N′-bis-triethyl-1,8-octanediyl-diammonium dihydroxide, N,N′-bis-triethyl-1,9-nonanediyl-diammonium dihydroxide, N,N′-bis-triethyl-1,10-decanediyl-diammonium dihydroxide, and their salts, and water; drying said mixture to form a powdered dry gel; and contacting and reacting said dry gel with steam at a saturated vapor pressure to produce an aluminum-containing zeolite [Al]-SSZ-31.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.