Palladium speciation in Pd-zeolite passive NOx adsorbers Mark Crocker University of Kentucky Abstract: Pd-exchanged zeolites have been extensively investigated for their performance as Passive NOx Adsorbers (PNAs), although much remains to be understood about the deactivation of these materials in the presence of exhaust gas components such as H2, H2O, and CO. In this study, ...

Pt Catalyzed NH3 Oxidation: From Nitric Acid to Diesel Emission Control Mike Harold University of Houston Abstract: Ammonia (NH3) is an important molecule with conflicting roles. On the one hand, NH3 is a commodity chemical; its manufacture is integral to the production of fertilizers and polyamides. The oxidation of NH3 on Pt to NOx (x ...

Review of Vehicle Engine Efficiency and Emissions Ameya Joshi Corning Abstract: Images of clear skies due to reduced human activity in recent times shows what is possible with cleaner mobility. With tightening regulations and adoption of the latest technologies have the potential to make clean air a permanent reality. This is a review of these ...

Technology Solutions for Cleaning-Up Heavy-Duty Vehicles Michael Geller MECA Abstract: This presentation includes results from two recent MECA-authored white papers that assess market-ready technologies being commercialized by suppliers of emission control and efficiency components for heavy-duty diesel vehicles to meet lower intermediate standards for NOx by 2024 as well as final standards in 2027. The ...