Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2003-04-07
2008-08-12
Caldarola, Glenn (Department: 1797)
Mineral oils: processes and products
Refining
Sulfur removal
C208S058000, C208S059000, C208S25400R
Reexamination Certificate
active
07410566
ABSTRACT:
The invention is directed to a process for hydroprocessing of hydrocarbon feedstock containing sulfur and/or nitrogen contaminants, said process comprising first contacting the hydrocarbon feedstock with hydrogen in the presence of at least one first group VIII metal on a first acidic support catalyst, and thereafter contacting the feedstock with hydrogen in the presence of at least one second group VIII metal catalyst on a less acidic support.
REFERENCES:
patent: 6261441 (2001-07-01), Gentry et al.
patent: 0575077 (1993-12-01), None
patent: WO 03/087272 (2003-10-01), None
International Search Report, PCT/NL03/00260, Sep. 19, 2003.
Chi Chung-Ming
Duijndam Hubertus Adrianus
Vaarkamp Marius
Amin Turocy & Calvin LLP
BASF Catalysts LLC
Caldarola Glenn
Douglas John C
Keller Raymond F.
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