Process for hydrodenitrogenating hydrocarbon oils
This patent describes a process for denitrification of hydrocarbon oils. It comprises contacting the hydrocarbon oils with hydrogen in the presence of a layered catalyst comprising a first layer of a catalyst which comprises a catalyst selected from the group consisting of a nickel-molybdenum-phosphorus/alumina catalyst and a cobalt-molybdenum-phosphorus/alumina catalyst having a molybdenum content greater than about 14% by weight of the first layer catalyst and having an average pore size of at least about 60 {Angstrom} and comprising a second layer of a catalyst which comprises a catalyst selected from the group consisting of a nickel-tungsten/silica-alumina-zeolite and a nickel-molybdenum/silica-alumina-zeolite catalyst, where the zeolite component comprises at least about 2% by weight of the second layer catalyst.
- Assignee:
- Chevron Research and Technology Co., San Franscisco, CA (USA)
- Patent Number(s):
- US 4990243; A
- Application Number:
- PPN: US 7-349848
- OSTI ID:
- 6180046
- Resource Relation:
- Patent File Date: 10 May 1989
- Country of Publication:
- United States
- Language:
- English
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