Promotion of cracking catalyst octane yield performance
US4521298A · kind A · utility
10Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1981 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Dec 16, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process 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 is a zeolite characterized by a silica to alumina mole ratio greater than about 500 and a constraint index within the approximate range of 1 to 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.