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2015 CLEERS Workshop

2015-04-27 - 2015-04-29

Emphasized topic areas:

  • Diesel and gasoline particulate filters
  • Selective catalytic NOx reduction
  • Urea and reductant spray modeling
  • Oxidation and reforming catalysts
  • Passive adsorbers and traps
  • Multi-functional catalysts and aftertreatment devices
  • Engine integration with emissions controls
  • Three-way catalysts
  • Low-temperature catalysts
  • Catalyst durability
  • Interpretation of experimental emissions control measurements
  • Development of micro-kinetic and global reaction mechanisms
  • Drive cycle simulations of advanced vehicle systems
  • Chemical and particulate exhaust analysis


  • Share recent experimental and computational simulation experience with advanced aftertreatment technologies
  • Enhance emissions control research collaborations among industry, universities, and government labs
  • Identify most pressing pre-competitive research priorities


This is the 18th workshop in a series sponsored by the DOE Office of Vehicle Technologies and the DOE Advanced Engine Crosscut Team. CLEERS workshops are informal, focused forums for sharing recent research results on lean and advanced engine emissions controls and their simulation. Participation by researchers in government, universities, and industry is welcome. Workshop discussions will be summarized for the DOE Office of Transportation Technologies (OTT) and the Advanced Engine Crosscut Team for consideration in improving priorities and technical focus and maximizing leveraging in DOE and industry-supported R&D.

About the 2015 Workshop

This will be a public meeting open to all those who are interested in understanding and simulating the performance of exhaust emission control devices under realistic conditions. The agenda will include invited presentations by internationally prominent researchers and an invited panel of experts from industry. Contributed oral presentations of 20-30 minutes and posters are also invited.
Questions should be directed to:

Monday, April 27th, 2015

12:00 noonRegistration
12:45 p.m.Welcome and Introduction
1:00 p.m.Invited Talk: Microkinetic models for exhaust-gas after-treatmentOlaf Deutschmann, Karlsruhe Institute of Technology (KIT)
1:45 p.m. Identifying Limiters to Low Temperature Catalyst ActivityGordon Bartley, Southwest Research Institute
2:05 p.m. Spatially Resolving Reactions in Diesel Oxidation Catalysts for Low Temperature Combustion ExhaustMelanie Hazlett, University of Houston
2:25 p.m. Approaches and Advances to the challenges of treating emissions at low temperaturesTodd Toops, Oak Ridge National Laboratory
2:45 p.m.Coffee Break
3:30 p.m.Invited Talk: Low Temperature CO Oxidation Reactivity on Atomically Dispersed Palladium on AluminaAbhaya K. Datye, University of New Mexico
4:15 p.m. Roles of ZrO2 in SO2-poisoned Pd/(Ce-Zr)O2 catalysts for CO oxidationDo Heui Kim, Seoul National University
4:35 p.m. Development of a transient kinetic model for SO2 storage/release on γ-Al2O3 and Pt/γ-Al2O3 catalystsTayebeh Hamzehlouyan, University of Houston
4:55 p.m. Numerical and Experimental Investigation of Mixing Quality for Pulsed Mixing Flows with ApplicationAmin Reihani, University of Michigan
5:15 p.m. Performance Evaluation of Mixed-Potential HC, NOx and NH3 Sensors in diesel and lean gasoline exhaustEric Brosha, Los Alamos National Laboratory
5:40 p.m.End of first day sessions

Tuesday, April 28th, 2015

7:30 a.m.Registration/Continental Breakfast
7:45 a.m.Welcome and Introduction
8:00 a.m.Invited Talk: Practical aftertreatment device model development based on experimental measurementsPetr Koci, University of Chemistry and Technology, Prague
8:45 a.m. Passive TWC+SCR Systems for Satisfying Tier 2 Bin2 Emission Standards on Lean-Burn Gasoline EnginesJoseph Theis, Ford Motor Company
9:05 a.m. Lean-Rich Cycling for Passive SCR Lean Gasoline Emission ControlJim Parks, ORNL
9:25 a.m. Fast Cycling NSR + SCR Over Dual-Layer CatalystsMichael Harold, University of Houston
9:45 a.m. Resolving N2O formation dynamics during lean/rich cycling of a commercial LNTJae-Soon Choi, Oak Ridge National Laboratory
10:05 a.m. Coffee Break
10:50 a.m. Real-Time Particulate Filter Soot and Ash Measurements, Optimized Control, and Diagnostics via Radio Frequency SensingAlexander Sappok, Filter Sensing Technologies, Inc.
11:10 a.m. Micro-scale Experimental Evaluation of PM Filtration with Low Particle Mass ConcentrationsSandeep Viswanathan, University of Wisconsin-Madison
11:30 a.m. Characterization of Particulate Matter Emitted by Spark Ignition Direct Injection Gasoline EngineAlla Zelenyuk, Pacific Northwest National Lab
11:50 a.m. Birth and Death of Soot Deposits and the Mechanism of Particle Emissions During Regeneration in DieselAthanasios G. Konstandopoulos, APT Lab, CPERI/CERTH
12:10 p.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:20 p.m.Panel Discussion: Needs and opportunities for passive adsorber devices (traps) for advanced engine emission controlsDoug Ball, Umicore Autocat USA
Hailing Chen, Johnson Matthey
Jason Lupescu, Ford Motor Company
Rudy Smaling, Cummins, Inc.
Joseph Theis, Ford Motor Company
3:20 p.m. Coffee Break
3:30 p.m.Poster Session
Impact of ZrO2 Supports on the Durability and Low-Temperature Performance of Pd-based Diesel Oxidation CatalystsEleni Kyriakidou, Oak Ridge National Labolatory
A Comparative Study of ZSM-5 and β-Zeolites for Hydrocarbon Trap Applications under "Cold-Start" ConditionsEleni Kyriakidou, Oak Ridge National Labolatory
Field-Ageing Impacts on a Commercial Automotive Cu/SAPO-34 SCR Catalyst: Focusing on NH3 Capacity UtilizationBill Partridge, Oak Ridge National Laboratory
The Impact of Heat and Mass Dispersion and Thermal Effects on the Scale-up of Monolith Reactors Used in Catalytic After-treatmentTian Gu, University of Houston
CeO2-based Passive NOx Adsorbers for Low Temperature ApplicationsSamantha Jones, University of Kentucky's Center for Applied Energy Research
Low Temperature Aftertreatment (LTAT) Test Protocol DevelopmentKenneth Rappe, Pacific Northwest National Laboratory
Aftertreatment Protocols for Catalyst Characterization and Performance EvaluationKenneth Rappe, Pacific Northwest National Laboratory
Rapid hydrocarbon pulsing on a LNT-SCR dual-layer catalystYang Zheng, University of Houston
Model Identification and Optimization-based Control Design for Four-Way Catalyst SystemMark Hoffman, Clemson University
Catalytic abatement of methane emissions from natural gas vehiclesGianni Caravaggio, Natura Resources Canada
5:30 p.m.End of second day sessions
6:30 p.m.No-Host Dinner: LaPita Mediterranean Cuisine Restaurant in Dearborn. Advanced registration to attend is required.

Wednesday, April 29th, 2015

7:30 a.m.Registration/Continental Breakfast
7:45 a.m.Welcome and Introduction
8:00 a.m.Invited Talk: Integrated Multi-functional Catalyst Devices for Vehicle Emission ControlWei Li, GM Global R&D
8:45 a.m. Model-based analysis of SCR-coated filters performance aspectsGrigorios Koltsakis, Aristotle University Thessaloniki
9:05 a.m. Simulation of Various SCR Technologies Applied to a 2 L Diesel Engine Model to Evaluate DeNOx Performance at Low and High TemperaturesJonathan Brown, Gamma Technologies, Inc.
9:25 a.m. System Level Aftertreatment Modeling Applied to SCR Thermal ManagementShahidur Rahman, Cummins Inc.
9:45 a.m. Coffee Break
10:30 a.m.Axially Distributed NH3 Storage Estimation for a Control-Oriented SCR ModelCory Hendrickson, Ford Motor Company
10:50 a.m.A Multi-Site Kinetic Model for NH3-SCR over Cu/SSZ-13Louise Olsson, Chalmers University
11:10 a.m.Elucidation of the Cu Redox Cycle Underlying NOx Selective Catalytic Reduction in Cu-SSZ-13William Schneider, University of Notre Dame
11:30 a.m.Further developments in washcoat reaction-diffusion solutions for small diffusion resistanceEdward Bissett, Gamma Technologies, Inc.
11:50 a.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:05 p.m.Invited Talk: Stiochiometric natural gas engine exhaust and emissionsRudy Smaling, Cummins Inc.
1:50 p.m. Hydrothermal aging modeling for SCR catalystsSimon Dosda, IFP Energies nouvelles
2:10 p.m. Development and Implementation of a Method to Track Hydrothermal Age of a Cu Zeolite SCR CatalystJosh Ratts, Caterpillar Inc.
2:30 p.m. Measuring the impacts of catalyst state on NH3 adsorption in copper zeolite SCR catalystsJosh Pihl, Oak Ridge National Laboratory
2:50 p.m.Coffee Break
3:35 p.m. Deactivation of Cu/SAPO-34 during low-temperature NH3-SCRKirsten Leistner, Chalmers University of Technology
3:55 p.m. Effects of Alkali and Alkaline Earth Cocations on Cu/SSZ-13 NH3-SCR CatalystsFeng Gao, PNNL
4:15 p.m. The effect of mesopore structure to Cu-ZSM-5 catalyst:simulated exhaust and engine bench testingZhenguo Li, Tsinghua university and China automotive technology&research center
4:35 p.m. Kinetic and Spectroscopic Characterization of Fe-SSZ-13 NH3 SCR CatalystsJanos Szanyi, Institute for Integrated Catalysis, Pacific Northwest National Laboratory
4:55 p.m.End of third day sessions


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University Of Michigan – Deaborn
4901 Evergreen Road
Dearborn, MI 48128 United States
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