Promotion of cracking catalyst octane yield performance
US4309280A · kind A · utility
65Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Jul 18, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for increasing gasoline octane number and/or total gasoline yield in catalytic cracking units by the addition of a very small amount of finely divided shape selective additive promoter, which additive promoter is not intimately combined with a substantial amount of another solid prior to contact with the cracking catalyst. The additive promoter, in one embodiment, is a crystalline aluminosilicate zeolite having a silica to alumina mole ratio greater than about 12 and a constraint index within the approximate range of 1 to 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.