DEEP DESULFURIZATION CATALYST, METHOD FOR PREPARING THE SAME AND METHOD FOR DESULFURIZATION USING THE SAME

摘要

A deep desulfurization catalyst for a mineral oil corresponding to kerosene which comprises nickel and/or nickel oxide, zinc oxide and aluminum oxide, wherein the content of the nickel component in terms of nickel oxide is 5 to 25 wt% and that of zinc oxide is 30 to 70 wt%, both being based on the total amount of all the components, shows, after being hydrogenated at 360 DEG C, an adsorption amount for nitrogen monoxide under 1 kg/cm<2> (9.80 x 10<-2> MPa) at 40 DEG C of 4.0 ml/g or more in terms of the amount under standard conditions, and has a specific surface area of 10 to 300 m<2>/g; a deep desulfurization catalyst according to the above, characterized as being prepared through an activation treatment in the presence of hydrogen at a temperature of 200 to 400 DEG C under a pressure of 1 to 20 kg/cm<2> (9.80 x 10<-2> to 1.96 MPa); a method for preparing the above catalyst which comprises mixing one of a water-soluble nickel metal salt and a water-soluble zinc metal salt or a mixture thereof with a basic material, to form separate precipitates containing nickel or zinc or a precipitate containing nickel and zinc, and then mixing the resultant precipitate with aluminum oxide or an aluminum oxide precursor, followed by molding and firing; and a method for deep desulfurization comprising contacting a mineral oil corresponding to kerosene with hydrogen under conditions of 200 to 400 DEG C, 1 to 20 kg/cm<2> (9.80 x 10<-2> to 1.96 MPa) and a LHSV of 0.1 to 5.