| 主权项 |
1. A method for controlling carbon monoxide (CO) and a volatile organic compound emissions comprising:
a. contacting a fluid emission comprising at least one of carbon monoxide (CO) and a volatile organic compound selected from the group consisting of saturated and unsaturated hydrocarbons, aromatic hydrocarbons, halocarbons, dioxins, and hydrocarbons containing one or more of sulfur, oxygen, nitrogen, and phosphorous, with a washcoat that contains an oxidation catalyst, wherein said washcoat is free of platinum group metals and is deposited on a substrate; and b. oxidizing the carbon monoxide and/or volatile organic compound in the presence of the oxidation catalyst to form at least one of CO2, H2O, haloacid, or halogen gas; wherein said oxidation catalyst comprises a composite oxide having at least two different high surface area oxide support materials, and
i. the at least two different high surface area oxide support materials are selected from the group consisting of CeO2, NiO, CaTiO3, MnO2, Pr2O3, TiO2, SiO2, Al2O3, and ZrO2,ii. at least one of the oxide support materials is impregnated with at least one promotion metal selected from the group consisting of Nd, Ba, Ce, La, Pr, Mg, Ca, Mn, Co, Zn, Nb, Zr, Mo, Sn, Ta, and Sr, andiii. each of the at least two different high surface area oxide support materials has a mean particle size of about 5 μm to about 20 μm.
|
