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US 6,759,364 B2Granted
Arsenic removal catalyst and method for making same
AssigneeShell Oil Company
InventorOpinder Kishan Bhan
Life of this patent
Estimating the term…
Abstract
A catalyst for removing arsenic from petroleum feedstocks comprising a porous refractory support impregnated with at least 8 wt. % of a Group VIB metal and an amount of Group VIII metal such that the atomic ratio of Group VIII metal to Group VIB metal is between about 1.5 and 2.5. A method of making such catalyst and a process for removing arsenic metals from a petroleum fraction using said catalyst.
Claims12
A catalyst, comprising:
- alumina;
- at least 8 weight percent nickel;
- at least 8 weight percent molybdenum;
- and between about 0.1 weight percent to about 3 weight percent phosphorus;
- wherein said catalyst is prepared by
- forming a support, said support comprises alumina and nickel,
- wherein said nickel is present in said support in an amount of no more than 1 weight percent, and
- wherein said support is formed by mixing alumina, water, a nickel compound, and an acid selected from the group consisting of nitric acid and acetic acid, to thereby form a mixture thereof, extruding said mixture, and calcining, at a first calcining temperature, said mixture to thereby form said support;
- impregnating said support with a first solution of a nickel compound to thereby form an impregnated support;
- and
- calcining, at a second calcining temperature, said impregnated support to thereby provide a calcined impregnated support;
- incorporating molybdenum and phosphorus into said calcined impregnated support to thereby provide a molybdenum/phosphorus incorporated material;
- and
- thereafter, calcining, at a third calcining temperature, said molybdenum/phosphorus incorporated material to thereby provide said catalyst.
11 more elements
A catalyst, consisting essentially of:
- alumina;
- at least 8 weight percent nickel;
- at least 8 weight percent molybdenum;
- and between about 0.1 weight percent to about 3 weight percent phosphorus;
- wherein said catalyst is prepared by
- forming a support, said support comprises alumina and nickel,
- wherein said nickel is present in said support in an amount of no more than 1 weight percent, and
- wherein said support is formed by mixing alumina, water, a nickel compound, and an acid selected from the group consisting of nitric acid and acetic acid, to thereby form a mixture thereof, extruding said mixture, and calcining, at a first calcining temperature, said mixture to thereby form said support;
- impregnating said support with a first solution of a nickel compound to thereby form an impregnated support;
- and
- calcining, at a second calcining temperature, said impregnated support to thereby provide a calcined impregnated support;
- incorporating molybdenum and phosphorus into said calcined impregnated support to thereby provide a molybdenum/phosphorus incorporated material;
- and
- thereafter, calcining, at a third calcining temperature, said molybdenum/phosphorus incorporated material to thereby provide said catalyst.
11 more elements
Dependencies are inferred from the claim text.