A method for producing a hydrorefining catalyst is used to produce the hydrorefining
catalyst which contains an inorganic oxide carrier and a hydrogenation-active metal
and which has such a bimodal pore characteristic that pores having pore diameters
of not more than 50 nm have a pore volume of not less than 0.4 cm3/g,
pores having pore diameters of not less than 50 nm have a pore volume of not less
than 0.2 cm3/g, and pores having pore diameters of not less than 1000
nm have a pore volume of not more than 0.1 cm3/g. The method comprises
the steps of mixing and forming a pseudo-boehmite powder having a dispersibility
index of 0.13 to 0.28, and calcinating the formed pseudo-boehmite under a condition
in which the pseudo-boehmite is converted into -alumina. The hydrorefining
catalyst, which has the bimodal pore characteristic, can be produced easily at
low cost.
