US 11,865,530 B2
Process for preparing a fischer-tropsch catalyst in the presence of an additive and of a specific calcining step
Damien Delcroix, Rueil-Malmaison (FR); and Romain Chenevier, Rueil-Malmaison (FR)
Assigned to IFP ENERGIES NOUVELLES, Rueil-Malmaison (FR)
Filed by IFP Energies nouvelles, Rueil Malmaison (FR)
Filed on Feb. 10, 2022, as Appl. No. 17/669,015.
Claims priority of application No. 21/01.299 (FR), filed on Feb. 11, 2021.
Prior Publication US 2022/0250047 A1, Aug. 11, 2022
Int. Cl. B01J 37/02 (2006.01); B01J 6/00 (2006.01); B01J 23/75 (2006.01); B01J 23/755 (2006.01); B01J 35/00 (2006.01); C10G 2/00 (2006.01); B01J 21/04 (2006.01); B01J 21/08 (2006.01)
CPC B01J 37/0203 (2013.01) [B01J 6/001 (2013.01); B01J 23/75 (2013.01); B01J 23/755 (2013.01); B01J 35/0006 (2013.01); B01J 37/0205 (2013.01); B01J 37/0209 (2013.01); C10G 2/332 (2013.01); B01J 21/04 (2013.01); B01J 21/08 (2013.01)] 19 Claims
 
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.