Octane improvement with large size ZSM-5 catalytic cracking
US4828679A · kind A · utility
39Cited by
28References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Aug 7, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Octane and total yield improvement in catalytic cracking of petroleum fractions under cracking conditions can be obtained by adding to conventional cracking catalysts small amounts of an additive catalyst comprising a class of zeolites characterized by a silica to alumina mole ratio greater than 12 and a constraint index of 1 to 12 wherein the zeolite additive catalyst has a crystal size of between 0.2 to 10 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.