US 11,865,519 B2
Noble metal-promoted IN2O3 catalyst for the hydrogenation of CO2 to methanol
Joseph Stewart, Uccle (BE); Daniel Curulla-Ferre, Uccle (BE); Javier Perez-Ramirez, Zürich (CH); Cecilia Mondelli, Zürich (CH); and Matthias Frei, Zürich (CH)
Assigned to TOTAL SE, Courbevoie (FR); and ETH ZURICH, Zurich (CH)
Appl. No. 17/273,108
Filed by TOTAL SE, Courbevoie (FR); and ETH ZURICH, Zurich (CH)
PCT Filed Sep. 5, 2019, PCT No. PCT/EP2019/073662
§ 371(c)(1), (2) Date Mar. 3, 2021,
PCT Pub. No. WO2020/049082, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 18306174 (EP), filed on Sep. 6, 2018; and application No. 18306175 (EP), filed on Sep. 6, 2018.
Prior Publication US 2021/0354114 A1, Nov. 18, 2021
Int. Cl. B01J 23/44 (2006.01); B01J 23/62 (2006.01); B01J 6/00 (2006.01); B01J 23/42 (2006.01); B01J 35/02 (2006.01); B01J 37/03 (2006.01); C07C 1/04 (2006.01); B01J 21/06 (2006.01); B01J 23/08 (2006.01); B01J 35/00 (2006.01); B01J 35/10 (2006.01); B01J 37/02 (2006.01); C07C 29/157 (2006.01)
CPC B01J 23/62 (2013.01) [B01J 6/001 (2013.01); B01J 21/066 (2013.01); B01J 23/08 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 35/006 (2013.01); B01J 35/023 (2013.01); B01J 35/1014 (2013.01); B01J 35/1019 (2013.01); B01J 37/0201 (2013.01); B01J 37/031 (2013.01); C07C 1/043 (2013.01); C07C 1/046 (2013.01); C07C 29/157 (2013.01)] 11 Claims
 
1. A Method to prepare a catalyst for use in a process for the synthesis of methanol, comprising indium oxide in the form of In2O3, and at least one additional metal selected from a noble metal; and in that the average particle size of said noble metal phase is, at least 0.05 nm, and less than 5 nm as determined by STEM-EDX, characterized in that the catalyst is prepared by co-precipitation of a saline solution at a pH above 8.5 comprising an indium salt and a salt of the at least one additional metal selected from a noble metal and optionally further comprising a salt of the at least one alkaline earth metal; comprising a further calcination step of the catalyst, wherein the calcined catalyst obtained comprised from 0.01 to 1.0 wt. % of the additional noble metal based on the total weight of the calcined catalyst and wherein the catalyst content of indium oxide in the form of In2O3 based on the calcined catalyst is ranging from 60 to 99.99 wt. %.