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2019 CLEERS Workshop

2019-09-17 - 2019-09-19


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

2019 CLEERS Workshop Agenda

Tuesday, September 17th

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:05 a.m.Invited Talk: Hydrocarbon and NOx Trapping for Low Temperature Emissions ControlWilliam Epling, University of Virginia
8:55 a.m. Improving PNA performance by understanding the chemistry and hydrothermal stability of Pd-loaded zeolites with different framework structuresJanos Szanyi, Pacific Northwest National Laboratory
9:20 a.m. Insights into NO Adsorption and Desorption phenomena on Pd-Exchanged Zeolite Passive NOx AdsorbersSreshtha Sinha Majumdar, Oak Ridge National Laboratory
9:45 a.m. Active Sites for Passive NOx Adsorption (PNA) on Pd/H-SSZ-13Unmesh Menon, University of Houston
10:10 a.m.Coffee Break
10:40 a.m. Experimental and Modeling Study of Passive NOx Adsorbers: Pd-H-ZSM-5 and Pd-SSZ-13Mugdha Ambast, University of Houston
11:05 a.m. Investigation of LT-NA on a diesel vehicle simulaterXinyi Wei, BASF
11:30 a.m. Simultaneous Low-temperature Storage of NO and C3H6 over Pd/SSZ-13: Chemistry of Adsorption and ReleaseHuawang Zhao, University of Michigan
11:55 a.m. Approaches to low-temperature emission control using multifunctional reactor bedsPranaw Kunal, Oak Ridge National Laboratory
12:20 p.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:20 p.m. Enhanced hydrocarbon trapping over ZSM-5 array-structure integrated on cordieriteJunfei Weng, Department of Materials Science and Engineering & Institute of Materials Science, University of Connecticut
1:45 p.m. Effect of Reductants and H2O on the NOx Storage Performance of Zeolite-Based Low Temperature NOx AdsorbersJoseph Theis, Ford Motor Company
2:10 p.m. Mechanistic Study of Ethanol SCR of NOx over Ag/Al2O3: Spatial Distribution of ProductsGalen Fisher, University of Michigan
2:35 p.m. Battery Electric Vehicle Review - The Latest InformationTimothy Johnson, Corning Incorporated
3:00 p.m.Coffee Break
3:30 p.m.Panel Discussion: PGM Utilization and ReplacementWei Li (General Motors Global R&d)
Christine Lambert (Ford Motor Co.)
Mario Castagnola (Johnson Matthey)
Tom Pauly (Umicore)
Xinyi Wei (BASF)
5:00 p.m.Remembering Stuart Daw
5:30 p.m.End of first day sessions

Wednesday, September 18th

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:05 a.m.Invited Talk: Variations on Soot Nanostructure and Reactivity from Low Emission EnginesAndre Boehman, University of Michigan
8:55 a.m.Nanoparticle Sensors for Automotive Particulate Emission ApplicationsAthanasios Konstandopoulos, CERTH
9:20 a.m.Flow distribution in a multi-functional exhaust filterBen Jensen, PNNL
9:45 a.m.Capability of SCRT® Configuration to Achieve Ultra Low NOx StandardsLiu Yang, Johnson Matthey
10:10 a.m.Coffee Break
10:40 a.m.Using close-coupled SCR to meet ultra-low NOx requirementsJohn Kasab, AVL Powertrain Engineering, Inc.
11:05 a.m.Preturbo SCR: Potential and challenges for NOx removal under elevated pressure and temperature.Deniz Zengel, Karlsruhe Institute of Technology (KIT), Institute of Chemical Technology and Polymer Chemistry (ITCP)
11:30 a.m.Enhancing the application and activity of Cu-SSZ-13 through inclusion of a secondary mixed metal oxideKenneth Rappe, Pacific Northwest National Laboratory
11:55 a.m.Co-exchange of Mn ions:A Simple Method to Improve Performance of Cu-SSZ-13 CatalystZhenguo Li, The Automotive Engineering Research Institute (AERI)
12:20 p.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:20 p.m.Invited Talk: Understanding and modeling of aging is the key challenge for commercial vehiclesAleksey Yezerets, Cummins Inc.
2:10 p.m.Model Development and Application over a Cu-CHA CatalystMichelle Bendrich, Umicore AG & Co. KG
2:35 p.m.On kinetic modeling of change in active sites upon hydrothermal aging of Cu-SSZ-13Rohil Daya, Cummins Inc.
3:00 p.m.Coffee Break
3:30 p.m.Development and validation of a single site kinetic model for severely aged Cu-SSZ-13 SCR: Inclusion of AN chemistry and high temperature NH3 oxidation by NO2Chintan Desai, Isuzu Technical Center of America
3:55 p.m.Lean and rich aging of Cu/SSZ-13 for SCRLouise Olsson, Chalmers University
4:20 p.m.Paired redox-acid sites on metal oxide surface with synergistic effect for NH3-SCR of NOxFudong Liu, University of Central Florida
4:45 p.m.Reduced-Order Models with Local Property Dependent Transfer Coefficients for Real Time Simulation of Monolith ReactorsMingjie Tu, University of Houston
5:10 p.m.Break
5:30 p.m.Poster Session (with heavy hors d’oeuvres)
Low temperature methane combustion over palladium ion-exchanged zeolitesChih-Han Liu, University at Buffalo
Hydrocarbon speciation of GDI cold-start exhaust emissions on current light-duty trucksMelanie DeBusk, NTRC-Oak Ridge National Laboratory
Bimetallic Pd-Co/BEA zeolites for passive NOx adsorptionJungkuk Lee, University at Buffalo
Catalytically Active Aerogel Material for Automotive Exhaust Mitigation ApplicationsBrad Bruno, Mechanical Engineering Department, Union College
Reactivity of Novel High-performance Fuels on Commercial Three-way Catalysts for SI Engine Emissions ControlJosh Pihl, Oak Ridge National Laboratory
Ag ion-exchanged ZSM-5 zeolites for hydrocarbons trapping applicationsJungkuk Lee, University at buffalo
Ammonia Storage Measurements and Feedback Control of SCR Systems Using Radio Frequency SensorsPaul Ragaller, CTS Corporation
Pd-promoted Beta Zeolite for Passive NOx Adsorber ApplicationsYaying Ji, University of Kentucky Center for Applied Energy Research
Palladium Speciation in Zeolites for Passive NOx AdsorptionTrevor Lardinois, Purdue University
NiMg Based Catalyst for the Complete Oxidation of Methane in Natural Gas Vehicle ExhaustGianni Caravaggio, Natural Resources Canada, CanmetENERGY
Impact of three-way catalyst formulation on reactivity in exhaust conditions relevant to propane-powered enginesDaekun Kim, University of Tennessee
Mechanistic Pathways of Binuclear Copper Complexes in Cu-SSZ-13 During Low Temperature NOx Selective Catalytic Reduction with AmmoniaCasey Jones, Purdue University
CO OXIDATION AND NO REDUCTION BY CO KINETICS OVER Rh/Al2O3 AND Pd/Al2O3Silvia Marino, University of Virginia
CO and Zeolite Caging Effects of Model Passive NOx AdsorbersKevin Gu, University of Virginia
Effect of Hydrothermal Aging with C2H4 on Selective Catalytic Reduction of NOx over Cu/SSZ-13 catalystsYu-Ren Chen, Chemical Engineering Department at UVA
Controlled Synthesis of High Surface Area Pd and Pt/SiO2(core)@ZrO2(shell) Catalysts for Low Temperature Oxidation ApplicationsChih-Han Liu, University at Buffalo
Effect of sulfation treatment on NH3-SCR mechanism over ceria-zirconia solid solutionsFudong Liu, University of Central Florida
Low Temperature Hydrocarbon Storage on Zeolite Beta: Effects of Precious Metal Loading, Si/Al Ratio, and Multicomponent Hydrocarbon FeedRyan Zelinsky, University of Virginia
Modeling and Simulation of a Low Temperature NOX Adsorber CatalystForrest Liu, BASF
7:30 p.m.End of second day sessions

Thursday, September 19th

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:05 a.m.Invited Talk: Journey to the World of Zero Impact Emissions for Internal Combustion EnginesChang Kim, Hyundai Motor Group
8:55 a.m.Hybrid Passenger Car Emissions – A concept study by means of simulationJohann Wurzenberger, AVL List GmbH
9:20 a.m.Perovskites as base metal catalysts for TWC: is there any stretch in their activity?Andrea Eva Pascui, Johnson Matthey
9:45 a.m.Effects of Oscillatory Feed on Four-Way Catalyst ActivityKyle Karinshak, University of Houston
10:10 a.m.Coffee Break
10:40 a.m.Mass Transport in Metal Oxide Nanoarray based Monolithic Catalysts: An Experimental-Theory StudyXingxu Lu, University of Connecticut
11:05 a.m.Onset of High Reactivity in Palladium Catalyzed Low-temperature Methane CombustionFeng Gao, PNNL
11:30 a.m.A Novel Low Cost Aftertreatment Solution for Lean Burn Gas EnginesJacques Nicole, Ricardo, Inc.
11:55 a.m.A Global Kinetic Model for a Modern DOC Incorporating Mechanisms for Sulfur Poisoning and Reverse HysteresisMohit Gayatri, Gamma Technologies LLC
12:20 p.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:20 p.m.Low-Temperature Oxidation Catalysts by High-Temperature Calcination of Pt/CeO2 and Cu/CeO2Bo Peng, Pacific Northwest National Laboratory
1:45 p.m.Novel 3D nanostructured catalyst for addressing current and future automotive and commercial vehicle emission aftertreatment needsSissi Liu, Metalmark Innovationc, Inc.
2:10 p.m.Modeling Non-Idealities in Oxygen Vacancy Formation on Reducible OxidesAndrew (Bean) Getsoian, Ford Motor Company
2:35 p.m.Update on lean gasoline NOx control at ORNLVitaly Prikhodko, Oak Ridge National Laboratory
3:00 p.m.End of Workshop

The 2019 CLEERS Workshop will be held September 17-19, 2019 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. The deadline to reserve a room at the special rate 8/17/2019. You can book, modify, or cancel a reservation on Sheraton Ann Arbor Website at https://www.marriott.com/event-reservations/reservation-link.mi?id=1551109572311&key=GRP&app=resvlink

Workshop Dates:September 17-19, 2019
Deadline to submit contributed presentation and poster abstracts:May 17, 2019
Extended deadline to submit contributed presentation and poster abstracts:May 31, 2019
Authors notified of abstract acceptance:July 15, 2019
Deadline for reduced fee registration:July 31, 2019
Deadline for full fee registration:August 30, 2019


Event Category:


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