Synthesis ZSM-48
US5961951A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1998 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Jan 12, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B39/48
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a composition and a method for preparing ZSM-48 exhibiting an X-ray pattern having values as set forth in Table 1 of the specification. The method of the present invention includes (a) preparing a reaction mixture; and (b) maintaining the mixture under crystallization conditions until crystals of the ZSM-48 are formed. The mixture includes a source of silica, a source of trivalent metal oxide, an alkali metal oxide, ethylenediamine and water. The mixture, in terms of mole ratios of oxides, has the following composition ranges: PA1 SiO.sub.2 /Me.sub.2 O.sub.3 : 100 to 1500, PA1 M.sub.2/n O/SiO.sub.2 : 0 to 0.2, PA1 RN/SiO.sub.2 : 2.0 to 5.0, PA1 OH.sup.- /SiO.sub.2 : 0 to 0.3, and PA1 H.sub.2 O/SiO.sub.2 : 10 to 100, wherein Me is a trivalent metal, M is an alkali metal and RN is ethylenediamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.