| 摘要 |
<p>A catalyst article for treating an emission gas is provided comprises: (a) an oxidation catalyst comprising at least one noble metal on a WO3-TiO2 support, wherein the support contains 1-20 weight percent WO3 based on the combined weight of the WO3 and TiO2; and (b) a substrate, wherein the first and second catalyst layers are on and/or within the substrate. The catalyst article may further comprise a second catalyst which may comprise a high surface area metal oxide selected from the group consisting of Al2O3, TiO2, CeO2, SiO2, ZrO2 or an aluminosilicate or silicoalumiophospahte molecular sieve, wherein the metal oxide or molecular sieve optionally supports a promoter metal selected from the group consisting of V, Cr, Co, Cu, Fe, La, Ce, In, Mn, Ni, Zn and Ge.The oxidation catalyst may be essentially free of V, Ce, Zr, Al, Si, and Mo. a method of treating an exhaust gas, and for regenerating the catalyst article are also disclosed.</p> |
