Inventors:
Thomas Richard ROBERTS - Rochester NY, US
Dennis Roland Fronheiser - Rochester NY, US
Thomas A. Iacubucci - Brockport NY, US
Assignee:
AirFlow Catalyst Systems - Rochester NY
International Classification:
F01N 3/20, B01D 53/56, B01D 53/94
US Classification:
60274, 4232132, 4232135, 60297
Abstract:
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 NOto 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.