Middle distillate selective hydrocracking process
US7048845B2 · kind B2 · utility
12Cited by
16References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2001 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Feb 19, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Increased yields of middle distillate products are obtained in a hydrocracking process by the use of a catalyst containing a Beta zeolite which has been hydrothermally treated to adjust the distribution of relatively weak and strong acid sites. The number of strong acid sites is reduced, preferably by steaming at a temperature above 750° C. for at least one hour, with the acidity distribution being measured by pyridine IR adsorption values taken at 150° C., and 300° C., and 450° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.