Hydroprocessing catalyst and its use
US5686375A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1994 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Sep 27, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst containing an overlayer of a catalytic promoter on a porous refractory support containing an underbedded Group VIII metal-containing component. The catalyst is prepared by sequential incorporation of the Group VIII metal followed by the additional catalytic promoter component, usually a Group VIB metal, with the porous refractory oxide support. Underbedded nickel components on the catalyst are characterized by a unique Raman spectrum exhibiting Raman bands in the region of about 240 cm.sup.-1 to about 250 cm.sup.-1 and in the region of about 595 cm.sup.-1 to about 605 cm.sup.-1. The catalyst has a MoO.sub.3 /NiO weight ratio less than 6 to 1 and more than 4 weight percent of NiO. The catalyst is especially useful for simultaneous hydrodenitrogenation and hydrodesulfurization of a gas oil, particularly when the refractory oxide support has a narrow pore size distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.