Process for making improved zeolite catalysts from peptized aluminas
US9617480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2011 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | May 18, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2235/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a process of preparing a catalyst from zeolite and peptized alumina. The invention comprises adding a yttrium compound to the zeolite, either prior to, during, or after its combination with the peptized alumina. The yttrium compound can be added to the zeolite via exchange of yttrium onto the zeolite prior to addition of peptized alumina, or the yttrium can be added as a soluble salt during the combination of the zeolite and peptized alumina. In either embodiment, the zeolite catalyst is then formed from the zeolite, yttrium and peptized alumina, optionally containing other inorganic oxide. This invention is suitable for preparing fluid cracking catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.