METHOD FOR THE HYDRODESULFURIZATION OF A GASOLINE FRACTION IN THE PRESENCE OF A SUPPORTED SULFIDE CATALYST PREPARED USING AT LEAST ONE CYCLIC OLIGOSACCHARIDE

摘要

The invention relates to a method for the hydrodesulfurization of a gasoline fraction containing hydrocarbons having at least two carbon atoms per molecule and having a final boiling point of no higher than 250°C, wherein the method comprises contacting the gasoline fraction with at least one catalyst, the active phase of which includes at least one Group VIII metal and at least one Group VIB metal deposited on a substrate, said catalyst being prepared according to a method including at least: i) a step of contacting at least said substrate with at least one solution containing at least one precursor of at least said Group VIII metal and at least one precursor of at least said Group VIB metal; ii) a step of contacting at least said substrate with at least one organic compound comprising at least one cyclic oligosaccharide consisting of at least six glucopyranose subunits bonded at α-(1,4); iii); a drying step for obtaining at least said Group VIII metal and at least said Group VIB metal in oxide form; and then iv) a sulfurization step in order to obtain the active phase in sulfide form, wherein steps i) and ii) can be carried out separately in any order, or simultaneously.