US 12,453,965 B2
Method for preparing a catalyst comprising an active nickel phase distributed in a shell
Malika Boualleg, Rueil-Malmaison (FR)
Assigned to IFP Energies nouvelles, Rueil-Malmaison (FR)
Appl. No. 17/923,348
Filed by IFP Energies nouvelles, Rueil-Malmaison (FR)
PCT Filed May 18, 2021, PCT No. PCT/EP2021/063046
§ 371(c)(1), (2) Date Nov. 4, 2022,
PCT Pub. No. WO2021/239497, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2005680 (FR), filed on May 29, 2020.
Prior Publication US 2023/0191387 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 21/04 (2006.01); B01J 23/755 (2006.01); B01J 35/00 (2024.01); B01J 35/10 (2006.01); B01J 35/30 (2024.01); B01J 35/61 (2024.01); B01J 37/02 (2006.01)
CPC B01J 37/0203 (2013.01) [B01J 21/04 (2013.01); B01J 23/755 (2013.01); B01J 35/397 (2024.01); B01J 35/613 (2024.01); B01J 37/0236 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A process for preparing a catalyst comprising an active phase based on nickel and alumina support, said catalyst comprising between 1% and 50% by weight of elemental nickel relative to the total weight of the catalyst, the nickel being distributed both over a crust at the periphery of the support, and at the core of the support, the thickness of said crust being between 2% and 15% of the diameter of the catalyst, the size of the nickel particles in the catalyst, measured in oxide form, being between 7 nm and 25 nm, which process comprises the following steps:
a) said support is impregnated with a volume V1 of a butanol solution of between 0.2 and 0.8 times the total pore volume TPV of said support in order to obtain an impregnated support;
b) the impregnated support obtained at the end of step a) is left to mature for 0.5 hour to 40 hours;
c) the matured impregnated support obtained at the end of step b) is impregnated with a solution comprising at least one precursor of the nickel active phase in order to obtain a catalyst precursor;
d) the catalyst precursor obtained at the end of step c) is dried at a temperature below 250° C.