US 11,772,088 B2
Porous core-shell catalyst and method for fabricating the same
Jin Ho Bang, Ansan-si (KR); and Min Soo Kim, Ansan-si (KR)
Assigned to INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS, Ansan-Si (KR)
Filed by INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS, Ansan-Si (KR)
Filed on Mar. 11, 2021, as Appl. No. 17/198,338.
Claims priority of application No. 10-2020-0029999 (KR), filed on Mar. 11, 2020.
Prior Publication US 2021/0283590 A1, Sep. 16, 2021
Int. Cl. B01J 27/043 (2006.01); B01J 35/00 (2006.01); B01J 37/00 (2006.01); B01J 23/75 (2006.01); B01J 37/20 (2006.01)
CPC B01J 37/0072 (2013.01) [B01J 23/75 (2013.01); B01J 27/043 (2013.01); B01J 35/002 (2013.01); B01J 35/008 (2013.01); B01J 37/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of manufacturing a porous core-shell catalyst structure, the method comprising:
preparing a bulk cobalt oxide having a first oxygen content;
providing a first reaction gas containing nitrogen to the bulk cobalt oxide to produce an intermediate product containing a porous cobalt oxide, wherein the intermediate product has a second oxygen content that is lower than the first oxygen content; and
providing a second reaction gas containing sulfur to the intermediate product to produce a porous core-shell catalyst structure including a core formed of the porous cobalt oxide and a shell formed of cobalt sulfide.