Crystalline intergrowth molecular sieves
US5935552A · kind A · utility
6Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Apr 15, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2253/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A novel molecular sieve is disclosed which has a crystal structure which is an intergrowth of the pharmacosiderite and sitinakite structures. The molecular sieve has an empirical formula of: EQU A.sub.((4-4x)/n) (M.sub.x Ti.sub.1-z Ge.sub.y).sub.4 (Ge.sub.1-p Si.sub.p).sub.q O.sub.r where A is a cation such as sodium or potassium and M is a metal such as niobium or tantalum. A process for preparing the molecular sieve is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.