CLEERS Teleconferences

Title: Multi-scale modeling of catalytic filters Petr Kočí, Martin Isoz, Marie Plachá, Marek Václavík, Martin Leskovjan University of Chemistry and Technology, Prague, Czech Republic http://www.vscht.cz/monolith Abstract: Increasingly stringent legislation for particulate matter emissions in automotive applications requires the use of particulate filters not only for Diesel cars (DPF) but in Europe newly also for cars with ...

Title: A Study of Soot Oxidation for GPF Applications Yong Miao, John Johnson, Rafat Hattar and Wei Li General Motors Abstract: Gasoline particulate filters (GPF) could be a critical component to meet future more stringent emission regulations for particulate matter (PM) and particulate count (PN). Better understanding the GPF physical behavior due to soot loading change ...

Title: A New Catalyzed HC Trap Technology that Enhances the Conversion of Gasoline and E85 Fuel Cold-start Emissions Jason Lupescu Ford Motor Company Abstract: Passive in-line catalyzed hydrocarbon (HC) traps have been used by some manufacturers in the automotive industry to reduce regulated tailpipe emissions of Non-Methane Organic Gas (NMOG) during engine cold start conditions.  ...

Title: NOx Performance Degradation of Aftertreatment Architectures Containing DOC with SCR on Filter or Uncatalyzed DPF Downstream of DEF Injection Eric Hruby John Deere Abstract: SCR on filter, also known as SCRoF, SCRF, SDPF, has been utilized to meet the stringent light duty Euro 6 emission regulations. Close-coupled DOC-SCR on filter with underfloor SCR architectures, ...

Title: Review of Vehicle Engine Efficiency and Emissions Ameya Joshi Corning Abstract: This review paper covers major regulatory and technology developments in 2018 pertinent to tailpipe emissions of greenhouse gases and criteria pollutants. Europe has proposed ambitious reductions in CO2 limits for both light- and heavy-duty sectors. The challenge is compounded with changing measurement norms ...

Title: Ammonia and Particulate Matter Storage Measurements on Combined SCR+F Systems using Radio Frequency Sensors Paul Ragaller CTS Corporation

Title: Influence of zeolite framework on Cu ion mobility and the kinetics of NOx SCR with ammonia. Prof. Raj Gounder Purdue University Abstract: Isolated copper ions exchanged onto zeolites catalyze the selective reduction (SCR) of nitrogen oxides (NOx) with ammonia in the presence of excess dioxygen. At low temperatures (<523 K), copper ions are fully coordinated ...

Multiscale modelling total pressure effects on complete methane oxidation over alumina supported palladium. C-R. Florén*, P-A. Carlsson, D. Creaser, H. Grönbeck and M. Skoglundh Competence Centre for Catalysis, Chalmers University of Technology, Göteborg, 412 96 Sweden *carl-robert.floren@chalmers.se Introduction Using natural gas for vehicle propulsion has recently regained interest where methane, which is the main component ...

2019 CLEERS Industry Priorities Survey results summary.

Strategies for improving durability of Cu/chabazite selective catalytic reduction (SCR) catalysts Feng Gao Pacific Northwest National Laboratory Abstract: Small-pore zeolite-based SCR catalysts, i.e., Cu/SSZ-13 and Cu/SAPO-34, have been successfully commercialized for nearly 10 years for abating NOx generated by diesel-powered vehicles . Both catalysts deactivate with time in use. Cu/SSZ-13 primarily deactivates by two causes: ...