Use of ZSM-12 in catalytic cracking for gasoline octane improvement and co-production of light olefins
US5308475A · kind A · utility
28Cited by
31References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1992 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Nov 23, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J29/70
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Heavy oils are subjected to catalytic cracking in the absence of added hydrogen using a catalyst containing a zeolite having the structure of ZSM-12 and a large-pore crystalline zeolite having a Constraint Index less than about 1. The process is able to effect a bulk conversion of the oil while at the same time yielding a higher octane gasoline and increased light olefin content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.