Hydrogenation catalyst and preparation method therefor and use thereof

A hydrogenation catalyst, comprising a carrier and a hydrogenation active metal component supported on the carrier,

• wherein the hydrogenation active metal component comprises at least one Group VIB metal component and at least one Group VIII metal component, the carrier being composed of phosphorus-containing alumina,
• wherein the hydrogenation catalyst is obtained by a method comprising the steps of:
• 1) contacting a solution of an inorganic aluminum-containing compound with an acid or alkali for a precipitation reaction, or contacting an organic aluminum-containing compound with water for a hydrolysis reaction, in the presence of a grain growth regulator and a phosphorus-containing compound at a pH of 4-7 to obtain a phosphorus-containing hydrated alumina;
• 2) aging the phosphorus-containing hydrated alumina at a pH of 7-10.5 to obtain a phosphorus-containing pseudo-boehmite,
• 3) loading a hydrogenation active metal component on the phosphorus-containing pseudo-boehmite to obtain a hydrogenation catalyst precursor, wherein the hydrogenation active metal component comprises at least one Group VIB metal component and at least one Group VIII metal component, and
• 4) calcining the hydrogenation catalyst precursor to obtain the hydrogenation catalyst at a calcining temperature of 560-800° C. for 1-10 hours,
• wherein the catalyst comprises 30-99 wt % of the carrier, 0.5-50 wt % of the Group VIB metal component and, calculated as oxides, and 0.5-20 wt % of the Group VIII metal component, calculated as oxides, based on the total amount of the hydrogenation catalyst, and the carrier comprises 94-99 wt % of Al2O3 and 1-6 wt % of P2O5, calculated as oxides and based on a total weight of the carrier, and
• when the hydrogenation catalyst is measured using a hydrogen temperature programmed reduction method (H2-TPR), the ratio of the peak height of the low-temperature reduction peak, Plow-temp peak, at a temperature of 300-500° C. to the peak height of the high-temperature reduction peak, Phi-temp peak, at a temperature of 650-850° C., i.e. S=Plow-temp peak/Phi-temp peak, is 1-1.9.