Process for hydrotreating a hydrocarbon cut with a boiling point of more than 250° C. in the presence of a sulphide catalyst prepared using a cyclic oligosaccharide

摘要

Preparation of a catalyst having at least one metal from group VIII, at least one metal from group VIB and at least one support; in succession:
i) one of
i1) contacting a pre-catalyst with metal from group VIII, metal from group VIB and support with a cyclic oligosaccharide naming at least 6 α-(1,4)-bonded glucopyranose subunits;i2) contacting support with a solution containing a precursor of metal from group VIII, a precursor of said metal from group VIB and a cyclic oligosaccharide composed of at least 6 α-(1,4)-bonded glucopyranose subunits; ori3) contacting support with a cyclic oligosaccharide composed of at least 6 α-(1,4)-bonded glucopyranose subunits followed by contacting solid derived therefrom with a precursor of metal from group VIII and a precursor of metal from group VIB.

主权项

1. A process for preparing a catalyst comprising at least one metal from group VIII, at least one metal from group VIB and at least one support formed from at least one oxide, said process comprising, in succession, at least:
i) at least one of i1)-i3):
i1) bringing at least one pre-catalyst comprising at least said metal from group VIII, at least said metal from group VIB and at least said support into contact with at least one organic compound formed from at least one cyclic oligosaccharide composed of at least 6 α-(1,4)-bonded glucopyranose subunits;i2) bringing at least said support into contact with at least one solution containing at least one precursor of at least said metal from group VIII, at least one precursor of at least said metal from group VIB and at least one organic compound formed from at least one cyclic oligosaccharide composed of at least 6 α-(1,4)-bonded glucopyranose subunits; ori3) bringing at least said support into contact with at least one organic compound formed from at least one cyclic oligosaccharide composed of at least 6 α-(1,4)-bonded glucopyranose subunits followed by at least once bringing the solid derived from (i3) into contact with at least one precursor of at least said metal from group VIII and at least one precursor of at least said metal from group VIB; ii) drying at least once; and iii) heat treatment at least once to decompose said organic compound.