| abstract |
A method for for preparing a dialkylnaphthalene in one step by contacting an dialkylbenzene compound with a solid catalyst in a gas or liquid phase in the presence of hydrogen, using a catalyst having composition (I) or (II) below: (1) (M1)a~(M2)b~(SiO2~XAl2O3)~(Al2O3)c (I) (2) Mixture of II-(i) and II-(ii): (M3)d~(Al2O3) II-(i) (M4)e~(SiO2~XAl2O3) II-(ii) wherein M1 is a metal selected from the group consisting of metals belonging to group VIII of a periodic table and ruthenium; M2 is a member selected from the group consisting of zinc, gallium, and oxides thereof; M3 is a metal belonging to group VIII of a periodic table; M4 is at least one alkali metal; and a, b, e, d, e, and X represent proportions, respectively. |