Process for preparing ferrierite
US5985238A · kind A · utility
7Cited by
24References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/23
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ferrierite is prepared by a method that provides extremely pure crystalline material. The method consists of preparing a mixture of silica, alumina, alkali metal and pyridine of a certain composition and heating said mixture to form the crystals. The SiO.sub.2 /Al.sub.2 O.sub.3 and OH.sup.- /SiO.sub.2 are controlled to insure preparation of high SiO.sub.2 /Al.sub.2 O.sub.3 ratio, high surface area and high purity ferrierite. An improved olefin skeletal isomerization catalyst is prepared from a high silica to alumina ratio, high surface area and high purity ferrierite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.