Disclosed herein are NOx reduction catalysts, particulate filters, exhaust treatment systems, and methods of treating a gas stream. In one embodiment, a NOx reduction catalyst comprises Cea-Zrb-Rc-Ad-Me-Ox. 'R' is W and/or Mn. If 'R' is W, 'A' is selected from the group consisting of Mo, Ta, Nb, and combinations comprising at least one of the foregoing 'A', and if 'R' is Mn, A is selected from the group consisting of W, Mo, Ta, Nb, and combinations comprising at least one of the foregoing 'A'. 'M' is a trivalent rare earth ion. a + b + c + d + e = 1. 'a' is about 0.1 to about 0.6; 'b' is about 0.25 to about 0.7; 'c' is about 0.02 to about 0.5; and if 'R' is Mn, 'd' is about 0.04 to about 0.2, and if 'R' is W, 'd' is less than or equal to about 0.2; while 'e' is less than or equal to about 0.15. The NOx reduction catalyst is capable of reducing NOx.
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机译：本文公开了NO x还原催化剂，颗粒过滤器，排气处理系统和处理气流的方法。在一个实施方案中，NO x还原催化剂包含Cea-Zrb-Rc-Ad-Me-Ox。 “ R”是W和/或Mn。如果“ R”为W，则“ A”选自Mo，Ta，Nb以及包含至少一个前述“ A”的组合，并且如果“ R”为Mn，则A选自由W，Mo，Ta，Nb组成，以及包含至少一个前述“ A”的组合。 “ M”是三价稀土离子。 a + b + c + d + e =1。“ a”约为0.1到0.6。 “ b”为约0.25至约0.7; “ c”为约0.02至约0.5;如果“ R”为Mn，则“ d”为约0.04至约0.2，并且如果“ R”为W，则“ d”小于或等于约0.2;而“ e”小于或等于0.15。 NOx还原催化剂能够还原NOx。
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