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US 5,686,375 AGranted
Hydroprocessing catalyst and its use
AssigneeUop LLC
InventorsPradeep S. Iyer, Howard D. Simpson, Suheil F. Abdo
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AssigneeUop LLC
InventorsPradeep S. Iyer, Howard D. Simpson, Suheil F. Abdo
Estimating the term…
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.
A catalyst composition comprising a porous refractory oxide, a molybdenum component, a phosphorus component and an underbedded nickel component, said composition characterized by a Raman spectrum comprising at least one Raman band in each of the regions of (1) about 240 cm.sup.-1 to about 250 cm.sup.-1, and (2) about 595 cm.sup.-1 to about 605 cm.sup.-1.
A catalyst composition comprising an underbedded nickel component, a molybdenum component, a phosphorus component and a porous refractory oxide, said composition characterized by a Raman spectrum comprising Raman bands in each of the regions of (1) about 240 cm.sup.-1 to about 250 cm.sup.-1, (2) about 595 cm.sup.-1 to about 605 cm.sup.-1, and (3) about 940 cm.sup.-1 to about 1,025 cm.sup.-1.
A catalyst composition comprising a porous refractory oxide, a molybdenum component, a phosphorus component and an underbedded nickel component, said composition characterized by a second derivative of the Raman spectrum of said composition comprising Raman bands in each of the regions of (1) about 240 cm.sup.-1 to about 250 cm.sup.-1, and (2) about 595 cm.sup.-1 to about 605 cm.sup.-1.
A catalyst composition comprising an alumina component, a molybdenum component, a phosphorus component and an underbedded nickel component, said composition characterized by a Raman spectrum comprising at least one Raman band in each of the regions of (1) about 241 cm.sup.-1 to about 248 cm.sup.-1, (2) about 595 cm.sup.-1 to about 605 cm.sup.-1 and (3) about 455 cm.sup.-1 to about 465 cm.sup.-1, and at least two Raman bands in the region of (4) about 940 cm.sup.-1 to about 1,010 cm.sup.-1.
Dependencies are inferred from the claim text.