Apparatus with catalyst for the reduction of nitrogen dioxoide (NO2) to nitric oxide (NO) by chemical means in a diesel catalytic support

摘要

In setting tighter emissions standards for nitrogen oxides, legislative bodies limit the amount of nitrogen dioxide (NO) permitted in exhaust. The disclosed catalysts can be coated on a support device in a diesel engine exhaust system to increase the reduction of NO to nitric oxide (NO). The disclosed coating comprises titanium dioxide, preferably in the form of rutile, comprising approximately 94% titanium dioxide and also comprising zirconium dioxide, silicon dioxide, iron(III) oxide, chromium oxide, vanadium oxide and aluminum oxide. In certain embodiments, a second coating comprised of palladium may be placed over the first coating of titanium dioxide or rutile.