| abstract |
Process for preparing a catalyst comprising at least one metal of group VIII, at least one metal of group VIB and at least one support formed by at least one oxide, said process comprising successively at least: i) at least one of the steps selected from: i1) at least one step of contacting between at least one precatalyst comprising at least said group VIII metal, at least said group VIB metal and at least said support with at least one organic compound formed from at least one cyclic oligosaccharide composed of at least 6 glucopyranose subunits with α- (1,4), i2) linkage at least one step of contacting at least said support with at least one solution containing at least one precursor of at least said group VIII metal, at least one precursor of at least said group VIB metal and at least one organic compound formed from at least one cyclic oligosaccharide composed of at least 6 glucopyranose subunits with α- (1,4) bond, and i3) at least a first step of contacting at least said support with at least one organic compound formed by at least one cyclic oligosaccharide composed of at least 6 glucopyranose subunits with α- (1,4) bond followed by at least a second stage of contacting the solid resulting from said first stage with at least one precursor of at least said group VIII metal and at least one precursor of at least said metal of group VIB; ii) at least one drying stage, and iii) at least one thermal treatment stage to decompose said organic compound. |