Rare earth exchanged layered silicate catalysts
US5183559A · kind A · utility
13Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Sep 13, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There is provided a catalyst comprising a layered silicate, such as magadiite, containing interspathic polymeric silica which serves to prop open the layers. The catalyst further comprises rare earth cations which are exchanged with other cations in the silicate. It has been discovered that this rare earth cation exchange imparts enhanced hydrothermal stability to the catalyst. There is also provided a method for making this catalyst and a process for using this catalyst for cracking hydrocarbons. In the cracking process, the catalyst is regenerated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.