A method 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) (M.sup.1).sub.a.(M.sup.2).sub.b.(SiO.sub.2.XAl.sub.2 O.sub.3).(Al.sub.2 O.sub.3).sub.c (I) (2) Mixture of II-(i) and II-(ii): (M.sup.3).sub.d.(Al.sub.2 O.sub.3) II-(i) (M.sup.4).sub.e.(SiO.sub.2.XAl.sub.2 O.sub.3) II-(ii) wherein M.sup.1 is a metal selected from the group consisting of metals belonging to group VIII of a periodic table and rhenium; M.sup.2 is a member selected from the group consisting of zinc, gallium, and oxides thereof; M.sup.3 is a metal belonging to group VIII of a periodic table; M.sup.4 is at least one alkali metal; and a, b, c, d, e, and X represent proportions, respectively.
一种制备二烷基
萘的方法,通过将二烷基苯化合物与固体催化剂在气态或液态相中与
氢气接触,使用具有以下组成的催化剂(I)或(II):(1) (M.sup.1).sub.a.(M.sup.2).sub.b.(SiO.sub.2.XAl.sub.2 O.sub.3).(Al.sub.2 O.sub.3).sub.c (I) (2) II-(i)和II-(ii)的混合物:(M.sup.3).sub.d.(Al.sub.2 O.sub.3) II-(i) (M.sup.4).sub.e.(SiO.sub.2.XAl.sub.2 O.sub.3) II-(ii),其中M.sup.1是周期表中属于第VIII族
金属和
铼的
金属;M.sup.2是从
锌、
镓和其氧化物组成的成员中选择的一种;M.sup.3是周期表中属于第VIII族
金属的
金属;M.sup.4是至少一种碱
金属;a、b、c、d、e和X分别表示比例。