Process for hydrotreating a hydrocarbon cut of boiling point above 250 u00b0 C in the presence of a sulfide catalyst prepared by means of a cyclic oligosaccharides

摘要

Process for hydrotreating a hydrocarbon cut of boiling point above 250 u00b0 C in the presence of a sulfide catalyst prepared by means of a cyclic oligosaccharides.The present invention relates to a process for the preparation of a catalyst comprising at least a metal of Group VIII, a metal of Group VIB at least, and at least one support.Comprising successively: (I) at least one of the stages selected from: I1) a step of placing in contact of the pre catalyst comprising the metal of Group VIII,This metal from Group VIB and this support with cyclic oligosaccharides composed of at least six subunits glicopiranose connected in 244 - (1)4); 2) a step of placing the support with a solution containing at least a precursor of at least this metal of Group VIII,And a metal of Group VIB and precursos of a cyclic oligosaccharides composed of at least 6 subunits glicopiranose connected in 244 - (1)2); and I3) a first stage of placing in contact of the support with a cyclic oligosaccharides composed of at least 6 subunits glicopiranose connected in 244 - ()4) followed by a second step of placing in contact of the solid from this first stage with a precursor of metal of Group VIII, and a precursor of the metal from Group VIB; (II) a stage of droughtGem; (III) a step of heat treatment.