Enhancing the low temperature oxidation performance over a Pt and a Pt-Pd diesel oxidation catalyst

- Hydrogen enhances low temperature oxidation of CO and all HC species over DOC.
- Combination of hydrogen & low load platinum DOC promotes low temperature pollutant control.
- H2 increases DOC temperature & creates intermediate species promoting CO & HC oxidation.
- Improved NO2 production with H2 addition is linked to better HC oxidation over the DOC.