US 11,883,799 B2
Nickel-cobalt-based catalysts for CO and NO oxidation; their activation
John Thomas Sirr Irvine, Fife (GB); Dragos Neagu, Fife (GB); Ian Metcalfe, Newcastle upon Tyne (GB); and Evangelos I. Papaioannou, Newcastle upon Tyne (GB)
Assigned to THE UNIVERISTY OF NEWCASTLE UPON TYNE, Newcastle Upon Tyne (GB)
Appl. No. 16/644,859
Filed by University Court of the University of St Andrews, St Andrews (GB); and The University of Newcastle upon Tyne, Newcastle Upon Tyne (GB)
PCT Filed Sep. 4, 2018, PCT No. PCT/GB2018/052492
§ 371(c)(1), (2) Date Mar. 5, 2020,
PCT Pub. No. WO2019/048840, PCT Pub. Date Mar. 14, 2019.
Claims priority of application No. 1714234 (GB), filed on Sep. 5, 2017.
Prior Publication US 2020/0282382 A1, Sep. 10, 2020
Int. Cl. B01J 23/755 (2006.01); B01J 37/08 (2006.01); F01N 3/10 (2006.01)
CPC B01J 23/755 (2013.01) [B01J 37/08 (2013.01); F01N 3/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A catalyst structure comprising exsolved particles of Ni, Co and/or mixtures of Ni and Co in a perovskite metal oxide of formula (I):
(M1aM2b)(CoxNiyM3z)O3  (I)
wherein
M1 and M2 are each independently an alkali earth metal or a rare earth metal,
M3 is Ti or Cr,
0≤a≤1,
0≤b≤1,
0<a +b≤1,
0≤x<1,
0≤y<1,
0≤z<1,
x+y+z=1, and
at least one of x and y >0
wherein the exsolved Ni, Co or NiCo particles have an average particle diameter of from 2 to 50 nm; and
wherein the exsolved particles are supported on a residual perovskite metal oxide lattice of the perovskite metal oxide.