A process for the hydrogenation of a polyunsaturated compound contained in a hydrocarbon feedstock in the presence of a catalyst comprising a porous support and an active phase comprising a group VIII metal, said catalyst being prepared according to the following steps:
a) an organic compound containing oxygen and/or nitrogen, but not comprising sulfur, is added to the porous support;
b) said porous support is brought into contact with a solution containing a salt of a precursor of the active phase;
c) the porous support obtained at the end of step b) is dried;
characterized in that step a) is carried out before or after steps b) and c) and is carried out by bringing together said porous support and said organic compound under conditions of temperature, pressure and duration such that a fraction of said organic compound is transferred in the gaseous state to the porous support.
在催化剂的存在下,通过以下步骤对含有多不饱和化合物的碳氢原料进行氢化反应,所述催化剂包括多孔支撑体和一个活性相,该活性相包括第VIII族
金属的盐,所述催化剂的制备包括以下步骤:a)向多孔支撑体中加入含氧和/或氮的有机化合物,但不含
硫;b)将所述多孔支撑体与含有活性相前体的盐的溶液接触;c)在步骤b)结束时获得的多孔支撑体进行干燥;其特征在于步骤a)在步骤b)和c)之前或之后进行,通过在温度、压力和时间条件下将所述多孔支撑体和所述有机化合物结合在一起,使得所述有机化合物的一部分以气态转移到多孔支撑体中。