| 摘要 |
A three-way catalytic material that reduces NOx in an oxidizing atmosphere and a process for reducing NOx in an oxidizing atmosphere. The material is a mixed metal oxide catalyst and can be made from a doped barium cerate matrix with a chemical formula of BaAyDzCe(1-y-z)O3-δ, where A is a precious metal or a combination of two or more precious metals and D is at least one transition metal. The coefficient y has a value between 0.0 and 0.20, inclusive, and the coefficient z has a value between 0.0 and 0.20, inclusive, and 8 has a value between 0.00 and 0.20, inclusive. |
| 主权项 |
1. A process for reducing NOx while oxidizing other gasses under both reducing and oxidizing atmospheres, the process comprising:
providing a three-way catalytic material made from a doped barium cerate matrix having a chemical formula of BaAyDzCe(1-y-z)O3-δ where A is a precious metal selected from at least one of the group consisting of Ru, Au, Ag, Pd, Pt, Ir and Rh, and D is a transition metal selected from at least one of the group consisting of Ti, V, Cr, Mn Fe Co, Ni, Cu, or Y, y has a value between 0.00 and 0.20, inclusive, and z has a value between 0.0 and 0.20, inclusive; providing a combusted fuel plus air atmosphere containing CO, unburnt HC and NOx; passing the combusted fuel plus air atmosphere over an outer surface of the three-way catalytic material; the outer surface of the three-way catalytic material oxidizing the CO to CO2, oxidizing the unburnt HC to CO2and H2O and reducing NOx to N2 and O2 in the same fuel plus air atmosphere. |
