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AssigneeTexaco Inc.
InventorsRobert J. Taylor, Jr., Pei-Shing E. Dai, Randall H. Petty, Joseph A. Durkin
Estimating the term…
A process for hydrodewaxing a hydrocarbon feedstock boiling above about 350.degree. F. by contacting the feedstock and hydrogen at a hydrogen pressure of from about 300 to about 2000 psig at a temperature of 400.degree. to 900.degree. F. and at a space velocity of about 0.1 to about 10.0 LHSV with a catalyst comprising about 0.1 to about 23 wt. % of an oxide of a Group VIII metal, such as nickel, or an oxide of a Group VIB metal, such as molybdenum; supported on a porous alumina support containing about 50 to about 85 wt. % of a crystalline alumino-silicate zeolite of the ZSM-5 type based on the weight of the support. The catalyst is further characterized by having greater than 60% of the pore volume between 45-600 Angstroms in the 70-200 Angstrom range. The process is especially useful for dewaxing lubricating oil basestocks.
A process for hydrodewaxing a hydrocarbon oil feedstock boiling above about 350.degree. F. which comprises contacting said feedstock and hydrogen at a hydrogen pressure of from about 300 to about 2000 psig, a temperature of from about 400 .degree. to about 900.degree. F. and a space velocity of about 0.1 to about 10 LHSV, with a catalyst comprising about 0.1 to about 23 wt. %, based on the total weight of the catalyst, of at least one metal oxide selected from the group consisting of a Group VIII metal and an oxide of a Group VIB metal supported on a porous support comprising alumina containing about 50 to about 85 wt. % of a crystalline aluminosilicate zeolite based on the weight of the support, and wherein the catalyst is further characterized by having greater than about 60% of the pore volume of pores having diameters between 45-600 Angstroms in the 70 to 200 Angstrom range and having about 50 to about 60% of the total pore volume in pores having diameters less than 100 Angstroms.
Dependencies are inferred from the claim text.