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2018 CLEERS Workshop

September 18 - September 20


CLEERS Workshops are annual meetings open to all those who are interested in understanding and simulating the performance of exhaust emission control devices under realistic operating conditions. The Workshops provide an informal, focused forum to:

  • share recent experimental and computational simulation experience with advanced aftertreatment technologies;
  • enhance emissions control research collaborations among industry, universities, and DOE national laboratories; and
  • identify the most pressing pre-competitive research priorities for emissions control.

CLEERS Workshops feature invited presentations by internationally prominent researchers and a moderated discussion with an invited panel of industry experts.

Workshop participants are encouraged to contribute oral presentations and posters on the following (or related) technologies and topics.

Topic Areas


  • Passive NOx adsorbers (PNA)
  • Hydrocarbon traps
  • Selective catalytic reduction (SCR) of NOx by urea/ammonia
  • Oxidation catalysts (DOC, MOC, etc.)
  • Three-way catalysts (TWC)
  • Diesel and gasoline particulate filters (DPF, GPF)
  • Selective catalytic reduction of NOx by hydrocarbons (HC SCR)


  • Identification of reaction mechanisms (from micro-kinetic through global) and kinetic parameters
  • Modeling strategies for improved accuracy and/or reduced computation time
  • Drive cycle simulations of advanced vehicle/emissions control systems
  • Formulation, evaluation, and simulation of catalysts with lower operating temperatures
  • Multifunctional aftertreatment devices: catalyst coated filters, layered/zoned washcoats
  • Integration of engines and emissions controls
  • Durability
  • Reductant (urea or fuel) delivery: spray modeling, decomposition processes, deposit formation

2018 CLEERS Workshop

Draft Agenda

Tuesday, September 18th

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:05 a.m.Invited Talk: Aftertreatment PGM Catalysts with Atomic Precision for Optimal Reaction EfficiencyMing Yang, General Motors, Global Research and Development Center
8:55 a.m. Reaction Kinetics for TWC Light-offAndrew (Bean) Getsoian, Ford Motor Company
9:20 a.m. Reactivity of Novel High-performance fuels on Three-way Catalysts for Control of SI Engine EmissionsSreshtha Sinha Majumdar, Oak Ridge National Laboratory
9:45 a.m. Model-based analysis of TWC-coated filters performance aspectsGrigorios Koltsakis, Aristotle University Thessaloniki
10:10 a.m.Coffee Break
10:40 a.m. A study of soot oxidation kinetics for GPF applicationsYong Miao, GM
11:05 a.m. Comparisons of Unit-Cell Filtration Models and Their Applications in Filtration Performance PredictionsYujun Wang, Cummins
11:30 a.m. Throat Unit Collector Modeling for Gasoline Particulate Filter PerformancePengze Yang, Texas A&M University
11:55 a.m. Soot Sensor Technology for OBD, Particulate Filter Load Estimation and PEMSAthanasios Konstandopoulos, CERTH
12:20 p.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:20 p.m. Evaluation of Emissions from Light Duty Trucks with and without the Use of a Gasoline Particulate FilterFadi Araji, Environment and Climate Change Canada
1:45 p.m. Pore-scale studies of ceramic exhaust filtersMark Stewart, PNNL
2:10 p.m. SDPF Performance - A Modeling Assessment of Diffusive Transport PhenomenaJohann Wurzenberger, AVL List GmbH
2:35 p.m. An Asymptotic Solution for Washcoat Pore Diffusion in Catalytic Monoliths: Reformulation and Extension to Small ConcentrationsEdward Bissett, Gamma Technologies
3:00 p.m.Coffee Break
3:30 p.m.Panel Discussion: Emission Control Challenges and Opportunities for Hybrid VehiclesTBD
5:30 p.m.End of first day sessions

Wednesday, September 19th

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:05 a.m.Invited Talk: Characteristics of Pd-based Passive NOx adsorbers (PNA) for cold start applicationDo Heui Kim, Seoul National University
8:55 a.m.NO Adsorption and Desorption Phenomena on a Pd-exchanged Zeolite Passive NOx AdsorberJosh Pihl, Oak Ridge National Laboratory
9:20 a.m.Toward Rational Synthesis and Molecular Level Understanding of Pd/Zeolite Passive NOx Adsorbers (PNA)Konstantin Khivantsev, Institute for Integrated Catalysis, Pacific Northwest National Laboratory
9:45 a.m.Effect of Reductants on the NOx storage and Release Performance of Pd/CZO Low Temperature NOx AdsorbersJoseph Theis, Ford Motor Company
10:10 a.m.Coffee Break
10:40 a.m.Pd/Zeolite Passive HC/NOx AdsorbersMark Crocker, University of Kentucky
11:05 a.m.Hydrocarbon Storage Simulation in Rhodium Software and Validation via Reactor TestingMinnie Lahoti, Southwest Research Institute
11:30 a.m.Small pore zeolite SSZ-13 supported Pd as highly stable low-temperature methane combustion catalystsYanran Cui, Pacific Northwest National Laboratory
11:55 a.m.Zeolite supported Pd for complete methane oxidation: the effect of silica to alumina ratioIda Friberg, Competence Centre for Catalysis, Chalmers University of Technology
12:20 p.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:20 p.m.Invited Talk: Fundamental Catalysis Science in the U.S. Department of EnergyCharles Peden, Pacific Northwest National Laboratory
2:10 p.m.Highly Stable and Active Supported Metal Catalysts for CO OxidationYong Wang, PNNL/WSU
2:35 p.m.Noble metal volatilisation from diesel oxidation catalystsLouise Olsson, Chalmers University
3:00 p.m.Coffee Break
3:30 p.m.Global kinetic model for predicting HC slip from Diesel Oxidation Catalysts during active regeneration of sootRama Krishna Dadi, Cummins Inc
3:55 p.m.Rapidly Pulsed Reductants for Diesel NOx Reduction with Lean NOx Traps: Global Kinetic Modeling of Operating RegimesGalen Fisher, University of Michigan
4:20 p.m.Fast Cycling NOx Storage and Reduction: Experiments and ModelingMichael Harold, University of Houston
4:45 p.m.Passive SCR performance under pseudo-transient cycle: challenges and opportunities for meeting Tier 3 emissionsVitaly Prikhodko, Oak Ridge National Laboratory
5:10 p.m.Break
5:30 p.m.Poster Session and Reception
Reactivity and Durability of Metal Oxide Nano-array based Oxidation CatalystsPu-Xian Gao, University of Connecticut
Spectroscopic and kinetic investigation of the reduction and oxidation half-cycles of NOx selective catalytic reduction with ammonia on Cu-SSZ-13Ishant Khurana, Purdue University
Synthetic Methods to Influence Framework Al Arrangements in CHA Zeolites and Consequences for NOx Selective Catalytic ReductionCasey Jones, Purdue University
Effect of Hydrocarbon on DeNOx Performance of Copper Zeolites: Combination of NH3/ and HC/SCRIljeong Heo, Korea Research Institute of Chemical Technology
Palladium Speciation in Beta and Chabazite Zeolites for Passive NOx AdsorptionTrevor Lardinois, Davidson School of Chemical Engineering, Purdue University
Speciation of Liquid Ion-Exchanged Cu into SSZ-13, ZSM-5, and Beta ZeolitesArthur Shih, Purdue University
CO effects on Pd-BEA and Pd-ZSM-5 as model catalysts for passive NOx adsorptionYuntao Gu, University of Virginia
Development of Diesel Oxidation Catalyst for Low Temperature Aromatic OxidationJin Hee Lee, Korea Research Institute of Chemical Technology
An Asymptotic Solution Approach for Real time simulation of Aftertreatment Reactors in HiL environmentsSanthosh Gundlapally, Gamma Technologies
Kinetic study of SO2 oxidation over Pd-Pt bimetallic catalystsMarina Cortes-Reyes, University of Virginia
Evolution of palladium speciation on a β-zeolite based passive NOx adsorber: effects of catalyst pretreatment and agingRobert Pace, University of Kentucky Center for Applied Energy Research
Multi-scale Reduced Order Models for Real Time Simulations of Multi-layered Monolith ReactorsMingjie Tu, University of Houston
Comparison of solid ammonium SCR system and urea SCR system in a 2.5L diesel engineSangho Lee, Korea Institute of Machinery & Materials
Development of a test protocol for evaluation of methane oxidation catalystsGianni Caravaggio, Natural Resources Canada, CanmetENERGY
Alternative Ammonia Storage Materials for SCRAbhi Karkamkar, PNNL
Engine-Aftertreatment in Loop Modeling for Heavy Duty Truck Emissions ControlZhiming Gao, ORNL
Detailed Characterization Studies of Vehicle- and Rapid-Aged Commercial Lean NOx Trap CatalystsJesus De Abreu, Volvo Cars
Impacts of fuel stratification on particulate matter formation and properties during ACI Engine operationMelanie DeBusk, NTRC-Oak Ridge National Laboratory
Impact of secondary phase on Cu-SSZ-13 catalyst SCR durabilityKenneth Rappé, Pacific Northwest National Laboratory
On-Board Measurements of Ammonia Storage on SCR and Combined SCR Filter Systems using Radio Frequency SensorsPaul Ragaller, CTS Corporation, Boston Innovation Office
Impact of ceria content and sulfur on TWC reactivity and NH3 generation relevant to Passive SCRTodd Toops, Oak Ridge National Laboratory
7:30 p.m.End of second day sessions

Thursday, September 20th

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:05 a.m.Invited Talk: Catalyst Directions for Low NOx EmissionsTom Pauly, Umicore
8:55 a.m.Revisiting Effects of Alkali and Alkaline Earth Co-cation Additives to Cu/SSZ-13 Standard Selective Catalytic Reduction CatalystsFeng Gao, PNNL
9:20 a.m.Cleaner car exhausts using ion-exchanged zeolites: Insights from atomistic simulationsMisbah Sarwar, Johnson Matthey Technology Centre, Sonning Common, Reading, UK
9:45 a.m.New Insights into the Mechanism of NH3-SCR over Cu- and Fe-zeolite Catalyst: Apparent Negative Activation Energy at High TemperatureSaurabh Joshi, Cummins Inc.
10:10 a.m.Coffee Break
10:40 a.m.Practical aspects of urea SCR for automotive NOx controlChristine Lambert, Ford Motor Co.
11:05 a.m.Modeling sulfur poisoning of NH3-SCR over Cu-SSZ-13William Epling, University of Virginia
11:30 a.m.Nature of SO2-poisoning on ZCuOH and Z2Cu sites in Cu-SSZ-13 during the NH3 Selective Catalytic Reduction (NH3-SCR) of NOxArthur Shih, Purdue University
11:55 a.m.Long-term SO2-poisoning of a Cu-CHA catalyst for NH3-SCR.Ton V.W. Janssens, Umicore Denmark ApS
12:20 p.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:20 p.m.Low Temperature Deactivation of Cu/SAPO-34 Catalysts Synthesized Using Different SDAs During NH3-SCR ReactionJungwon Woo, Chalmers University of Technology
1:45 p.m.Practical implications of HC storage and release on SCR catalysts for HDD applicationsManasa Sridhar, CNH Industrial, FPT Industrial
2:10 p.m.Ammonia Preparation in the Tailpipe: Spray/Wall Interaction and Deposit FormationMarion Börnhorst, Karlsruhe Institute of Technology (KIT), Institute of Chemical Technology and Polymer Chemistry (ITCP)
2:35 p.m.Update on U.S. DRIVE Advanced Combustion and Emission Control Low Temperature Aftertreatment Evaluation ProtocolsKenneth Rappé, Pacific Northwest National Laboratory
3:00 p.m.End of Workshop

The 2018 CLEERS Workshop will be held September 18-20, 2018 at the Sheraton Ann Arbor

Conference Hotel

Sheraton Ann Arbor
3200 Broadwalk Street
Ann Arbor, MI 48108-1774


We have a block of rooms reserved at conference hotel at a special rate.  You can book, modify, or cancel a reservation from February 27, 2018 to September 22, 2018 on Sheraton Ann Arbor Website OR copy and paste the following link into a web browser https://www.starwoodmeeting.com/events/start.action?id=1802277558&key=3674FE9D

Workshop Dates:September 18-20, 2018
Deadline to submit contributed presentation and poster abstracts:May 18, 2018
Extended deadline to submit contributed presentation and poster abstracts:May 31, 2018
Authors notified of abstract acceptance:July 16, 2018
Deadline for reduced fee registration:July 31, 2018
Deadline for full fee registration:August 31, 2018
Author Resources

Abstract Submission Deadline extended to May 31, 2018

Submit Abstract

Workshop Registration

Workshop Registration

$250 Reduced Registration Fee Deadline: July 31, 2018

$300 Full Registration Fee Deadline: August 31, 2018

$50 cancelation fee, no refunds after August 31, 2018


September 18
September 20
Event Category:


Sheraton Ann Arbor
3200 Boardwalk Drive
Ann Arbor, MI 48108 United States
+ Google Map
(734) 996-0600

Key Dates

Abstracts Due:
May 18, 2018
Deadline for reduced fee registration:
July 31, 2018
Deadline for full fee registration:
August 31, 2018