Chemistry of Clean Energy Conversion, Storage, and Production

Chemistry of Automotive Emission Control Catalysis: Current R&D and Future Challenges (#21)

Global dependence on oil is largely driven by transportation. In consideration of this, recently passed legislation in the U.S. and elsewhere will require major improvements in vehicle fuel efficiency. As such, automotive manufacturers are pursuing a variety of high risk, highly efficient stoichiometric and lean combustion strategies to achieve superior performance. However, before these advancements can be introduced into the market, they must also be able to meet increasingly stringent emissions requirements. Significant roadblocks to this implementation include difficulties in catalytic reduction of NOx at high air/fuel ratios (highly oxidizing so-called lean-burn conditions) that are typical of new fuel efficient engine technologies. Furthermore, a newly recognized challenge is the inability of current catalyst technologies to provide required catalytic reactivities at the much lower exhaust temperatures that will accompany highly efficient combustion processes. Central to meeting these significant challenges is an understanding of the fundamental mechanistic chemistry of the promising catalytic processes. In addition, a detailed understanding of the important chemical and physical properties catalyst materials, including dependence of surface and bulk composition and structures of catalytically active sites, is essential for progress. Our goal with this symposium is to review the chemical challenges related to the discovery and development of new materials and catalytic processes that offer the capability of reducing NOx under lean-burn conditions, and to discuss the latest R&D related to the development of reactivity for both oxidation reactions (CO and hydrocarbon), and NOx reduction. Invited speakers will include Enrico Tronconi (Politecnico Milano), Bill Schneider (University of Notre Dame), In-Sik Nam (POSTECH), and Mike Harold (University of Houston). A poster session accompanying the oral program will also be organized.
Last update: Dec 28, 2015