Inventors:
- DETROIT MI, US
Ryan J. Day - Waterford MI, US
Xingcheng Xiao - Troy MI, US
Gongshin Qi - Troy MI, US
Wei Li - Troy MI, US
International Classification:
F01N 3/10
B01J 23/50
B01J 23/52
B01J 23/755
B01J 23/75
B01J 23/42
B01J 23/44
B01J 23/46
Abstract:
Bimetallic oxidation catalyst devices include a support body, one or more metal A bulk deposits disposed on the support body, and a plurality of metal B atomic clusters disposed on the surface of each of the metal A bulk deposits. Metal A and metal B are different metals each selected from the group consisting of platinum group metals (PGM), Ag, Au, Ni, Co, and Cu, and substantially no metal B is deposited on the support body. At least 85% by weight of the metal B atomic clusters comprise up to 10 atoms and the maximum metal B atomic cluster size is 200 metal B atoms. The combined loading of metal A and metal B can be less than 1.5% by weight relative to the weight of the support body. Metal A can include Pd, Rh, Rh, or Pd, and metal B can include Pt, Pt, Ag, or Ag.