US 11,752,491 B2
Catalyst for conversion of carbon dioxide to methanol by hydrogenation, and method for preparing the same
Chae Hwan Hong, Seoul (KR); Jin Woo Choung, Suwon Gyeonggi-do (KR); Jong Wook Bae, Gyeonggi-do (KR); and Tae Yeol Goag, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Research & Business Foundation Sungkyunkwan University, Suwon (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Research & Business Foundation Sungkyunkwan University, Gyeonggi-do (KR)
Filed on Sep. 28, 2020, as Appl. No. 17/35,144.
Claims priority of application No. 10-2020-0077601 (KR), filed on Jun. 25, 2020.
Prior Publication US 2021/0402377 A1, Dec. 30, 2021
Int. Cl. B01J 23/44 (2006.01); B01J 35/10 (2006.01); B01J 37/08 (2006.01); B01J 23/10 (2006.01); B01J 23/08 (2006.01); C07C 29/157 (2006.01); C07C 31/04 (2006.01)
CPC B01J 23/44 (2013.01) [B01J 23/08 (2013.01); B01J 23/10 (2013.01); B01J 35/1004 (2013.01); B01J 35/1038 (2013.01); B01J 37/08 (2013.01); C07C 29/157 (2013.01); C07C 31/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A catalyst for converting carbon dioxide to methanol, the catalyst comprising:
mesoporous indium oxide; and
a secondary catalyst supported on the mesoporous indium oxide,
wherein a porous structure of the mesoporous indium oxide comprises Ia3d symmetry, and comprises mesopores and micropores interconnecting the mesopores,
wherein the mesoporous indium oxide has a specific surface area of greater than about 40 m2/g,
a pore volume thereof is greater than about 0.05 cm3/g,
wherein the secondary catalyst is formed of cerium oxide (CeO2), gallium oxide (Ga2O3), or a combination thereof, and
wherein the catalyst comprises an amount of about 1 wt % to 5 wt % of the cerium oxide or the gallium oxide secondary catalyst with respect to the total weight of the catalyst.
 
4. A method of preparing a catalyst for conversion of carbon dioxide to methanol by hydrogenation, comprising:
supporting a precursor of an indium oxide on a mesoporous silica template;
preparing mesoporous indium oxide by separating the mesoporous silica template from the precursor of the indium oxide; and
supporting a secondary catalyst on the mesoporous indium oxide,
wherein the catalyst comprises the mesoporous indium oxide, and the secondary catalyst supported on the mesoporous indium oxide,
wherein a porous structure of the mesoporous indium oxide comprises Ia3d symmetry, and comprises mesopores and micropores interconnecting the mesopores,
wherein the mesoporous indium oxide has a specific surface area of greater than about 40 m2/g, and a pore volume thereof is greater than about 0.05 cm3/g,
wherein the secondary catalyst is formed of cerium oxide (CeO2), gallium oxide (Ga2O3), or a combination thereof, and
wherein the catalyst comprises an amount of about 1 wt % to 5 wt % of the cerium oxide or the gallium oxide secondary catalyst with respect to the total weight of the catalyst.