Method for preparation of small zeotype crystals
US6241960A · kind A · utility
17Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/32
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for the preparation of small zeotype crystals with controlled sizes comprising the steps of synthesizing inside a porous material having a majority of pores less than 1000 .ANG. a synthesis gel consisting essentially of PA1 (a) a zeotype precursor composition comprising hydratized oxides of Si, Al and P and metal compounds PA1 (b) a zeolite template; and PA2 heating or autoclaving the porous support material containing synthesis gel, whereby zeotype crystals are formed; and PA2 rinsing and drying the porous support material containing zeotype crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.