Preparation of a reforming catalyst

Claim 1

A method of preparing a reforming catalyst comprising the steps of: (a) impregnating a large-pore zeolite with an aqueous solution of a Group VIII metal and allowing said zeolite to soak in said solution for less than three hours to form a catalyst; (b) drying said catalyst; and (c) calcining said dried catalyst in an atmosphere containing steam.

Claim 2

A method of preparing a reforming catalyst comprising the steps of: (a) impregnating a large-pore zeolite with an aqueous solution of a Group VIII metal and allowing said zeolite to soak in said solution for less than three hours to form a catalyst; (b) drying said catalyst; and (c) calcining said dried catalyst in an atmosphere containing steam.

Claim 3

A method of preparing a reforming catalyst comprising the steps of: (a) mixing a large-pore zeolite with an inorganic oxide binder; (b) extruding said mixture to form an extrudate; (c) drying and calcining said extrudate; (d) impregnating said calcined extrudate with an aqueous solution of a Group VIII metal and allowing said calcined extrudate to soak in said solution for less than three hours to form a catalyst; (e) drying said catalyst; and (f) calcining said dried catalyst in an atmosphere contaning steam.

Claim 4

A method of preparing a reforming catalyst comprising the steps of: (a) mixing a large-pore zeolite with an inorganic oxide binder; (b) extruding said mixture to form an extrudate; (c) drying and calcining said extrudate; (d) impregnating said calcined extrudate with an aqueous solution of a Group VIII metal and allowing said calcined extrudate to soak in said solution for less than three hours to form a catalyst; (e) drying said catalyst; and (f) calcining said dried catalyst in an atmosphere contaning steam.

Claim 8

A method of preparing a reforming catalyst comprising the steps of: (a) mixing a type L zeolite with an inorganic oxide binder, wherein said inorganic oxide is selected from the group consisting of silica, alumina, and aluminosilicates; (b) extruding said mixture to form an extrudate; (c) drying and calcining said extrudate; (d) ion exchanging said calcined extrudate with an aqueous solution of an alkaline earth metal selected from the group consisting of barium, strontium, and calcium; (e) drying and calcining said ion exchanged extrudate; (f) impregnating said calcined extrudate with an aqueous solution of a Group VIII metal and allowing said calcined extrudate to soak in said solution for less than three hours to form a catalyst; (g) drying said catalyst; and (h) calcining said dried catalyst with steam in air, wherein said air has at least 3% steam.

Claim 9

A method of preparing a reforming catalyst comprising the steps of: (a) mixing a type L zeolite with an inorganic oxide binder, wherein said inorganic oxide is selected from the group consisting of silica, alumina, and aluminosilicates; (b) extruding said mixture to form an extrudate; (c) drying and calcining said extrudate; (d) ion exchanging said calcined extrudate with an aqueous solution of an alkaline earth metal selected from the group consisting of barium, strontium, and calcium; (e) drying and calcining said ion exchanged extrudate; (f) impregnating said calcined extrudate with an aqueous solution of a Group VIII metal and allowing said calcined extrudate to soak in said solution for less than three hours to form a catalyst; (g) drying said catalyst; and (h) calcining said dried catalyst with steam in air, wherein said air has at least 3% steam.