HYDROCRACKING CATALYST FOR HEAVY OIL

摘要

A catalyst for hydrocracking of heavy oil which comprises a support comprising crystalline aluminosilicate and a porous inorganic oxide excluding the crystalline aluminosilicate and an active metal supported on the support, wherein (a) the support comprises the crystalline aluminosilicate in an amount of 18% by mass or greater and smaller than 45% by mass and the porous inorganic oxide in an amount exceeding 55% by mass and of 82% by mass or smaller based on a sum of the amount of the crystalline aluminosilicate and the amount of the porous inorganic aluminosilicate, (b) the active metal is at least one metal selected from molybdenum, tungsten and nickel, and (c) the distribution of pores in the catalyst for hydrocracking of heavy oil is such that a volume of pores having a diameter of 500 to 10,000 Å is 10% or smaller and a volume of pores having a diameter of 100 to 200 Å is 60% or greater based on a volume of entire pores having a diameter of 50 to 10,000 Å. The catalyst exhibits excellent desulfurizing function and excellent activity for decomposition of fractions having a high boiling point of 525° C. or higher such as the vacuum residue.