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-O x. "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. ® KIPO & WIPO 2009
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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-O x。 “ 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以及包含至少一个上述“ A”的组合组成。 “ M”是三价稀土离子。 a + b + c + d + e ＝ 1。“ a”为约0.1至约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，如果“ R”为W，则“ d”小于或等于约0.2。而“ e”小于或等于约0.15。 NOx还原催化剂能够还原NOx。 ®KIPO和WIPO 2009
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