Patent ID: 11865530
Assignee: IFP ENERGIES NOUVELLES
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 0:
1. A process for preparing a catalyst containing an active phase based on at least one group VIII metal and a porous support based on alumina, silica or silica-alumina, said catalyst being prepared by at least the following steps:
a) said support is brought into contact with at least one organic compound comprising at least oxygen and/or nitrogen;
b) said porous support is brought into contact with at least one solution containing at least one precursor of the active phase comprising at least one group VIII metal, it being possible for steps a) and b) to be carried out separately, in any order, or simultaneously;
c) the catalyst precursor obtained on conclusion of the sequence of steps a) and b) is dried at a temperature of less than or equal to 200° C., so as to obtain a dried catalyst precursor;
d) the dried catalyst precursor obtained on conclusion of step c) is calcined at a temperature greater than 200° C. and less than 1100° C. under a stream of inert gas and/or of oxidizing gas, it being understood that the velocity of said gas stream, defined as the volumetric flow rate of said gas stream per mass of catalyst per hour, is greater than 1 litre per gram of catalyst and per hour.