Process for the preparation of hydrotreating catalysts by phosphorus-containing compounds impregnated

摘要

A method of preparing a hydrotreating catalyst, a) a group VIII and at least one element of Group VIB and / or at least firing and containing an amorphous carrier and one element present invention, and / or the dried catalyst precursor, to obtain a single step, b) from step a) at least impregnating composed impregnating solution of the phosphorus compound solution of at least one polar solvent at least one that has a dielectric constant of greater than 20 without firing step c) and subsequent steps ripen the impregnated catalyst precursor is, on a method comprising the step of drying the catalyst precursor obtained from step b).