US 12,458,960 B2
Method for preparing a catalyst comprising a nickel active phase distributed in a crust via impregnation of heptanol
Malika Boualleg, Rueil-Malmaison (FR); and Laetitia Jothie, Rueil-Malmaison (FR)
Assigned to IFP ENERGIES NOUVELLES, Rueil-Malmaison (FR)
Appl. No. 18/576,257
Filed by IFP ENERGIES NOUVELLES, Rueil-Malmaison (FR)
PCT Filed Jul. 12, 2022, PCT No. PCT/EP2022/069500
§ 371(c)(1), (2) Date Jan. 3, 2024,
PCT Pub. No. WO2023/001642, PCT Pub. Date Jan. 26, 2023.
Claims priority of application No. 2107963 (FR), filed on Jul. 22, 2021.
Prior Publication US 2024/0326032 A1, Oct. 3, 2024
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 37/00 (2006.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01); B01J 37/18 (2006.01); C07C 5/05 (2006.01); C07C 5/11 (2006.01); B01J 35/51 (2024.01)
CPC B01J 37/0205 (2013.01) [B01J 21/04 (2013.01); B01J 23/755 (2013.01); B01J 35/393 (2024.01); B01J 35/394 (2024.01); B01J 37/0018 (2013.01); B01J 37/0203 (2013.01); B01J 37/0207 (2013.01); B01J 37/0213 (2013.01); B01J 37/0236 (2013.01); B01J 37/024 (2013.01); B01J 37/088 (2013.01); B01J 37/18 (2013.01); C07C 5/05 (2013.01); C07C 5/11 (2013.01); B01J 35/51 (2024.01); B01J 2235/15 (2024.01); C07C 2521/04 (2013.01); C07C 2523/755 (2013.01)] 15 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 less than 15 nm, which process comprises:
a) impregnating said support with a volume V1 of a heptanol 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) impregnating the impregnated support obtained at the end of a) with a solution comprising at least one precursor of the nickel active phase in order to obtain a catalyst precursor; and
c) drying the catalyst precursor obtained at the end of b) at a temperature below 250° C.