Hydrogenation catalyst, preparation process thereof and use thereof

A process for preparing a hydrogenation catalyst, wherein said hydrogenation catalyst comprises a hydrogenation catalyst support and a hydrogenation active component, wherein said hydrogenation active component comprises a sulfide of the metal of Group VIB and a compound of the metal of Group VIII,

• the process comprises the following steps:
• (1) impregnating the hydrogenation catalyst support with a first impregnation solution containing the metal of Group VIB, and then drying, sulfurizing without calcination to obtain a sulfurized material;
• and
• (2) impregnating the sulfurized material with a second impregnation solution containing the metal of Group VIII, and optionally subsequently drying and/or calcining to obtain the hydrogenation catalyst,
• wherein the first impregnation solution further contains a first auxiliary selected from an organic acid having at least two carboxyl groups, an organic alcohol having at least three hydroxy groups, and a mixture thereof,
• wherein the second impregnation solution further contains a second auxiliary selected from an organic acid having at least two carboxyl groups, an organic alcohol having at least one double bond, an organic alcohol having at least two hydroxy groups, and mixtures thereof,
• and
• wherein said hydrogenation catalyst, based on SEM-EDX measurements, has A/B=60-100%, assuming that a molar ratio of said metal of Group VIII (as an element of the metal of Group VIII) to said metal of Group VIB (as an element of the metal of Group VIB), as measured upon observing the region where said sulfide of the metal of Group VIB is present, is A, and that the molar ratio of said metal of Group VIII (as the element of the metal of Group VIII) to said metal of Group VIB (as the element of the metal of Group VIB) of said hydrogenation catalyst is B.