Search Results - "Pihl, Josh A"

Catalytic Exhaust Gas Recirculation-Loop Reforming for High Efficiency in a Stoichiometric Spark-Ignited Engine through Thermochemical Recuperation and Dilution Limit Extension, Part 1: Catalyst Performance by Chang, Yan, Szybist, James P, Pihl, Josh A, Brookshear, D. William

“…The use of fuel reformate from catalytic processes is known to have beneficial effects on the spark-ignited combustion process through enhanced dilution…”
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Catalytic Steam and Partial Oxidation Reforming of Liquid Fuels for Application in Improving the Efficiency of Internal Combustion Engines by Brookshear, D. William, Pihl, Josh A, Szybist, James P

“…This study investigated the potential for catalytically reforming liquid fuels in a simulated exhaust gas recirculation (EGR) mixture loop for the purpose of…”
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Passive-ammonia selective catalytic reduction (SCR): Understanding NH3 formation over close-coupled three way catalysts (TWC) by DiGiulio, Christopher D., Pihl, Josh A., II, James E. Parks, Amiridis, Michael D., Toops, Todd J.

“…•Evaluated 4 TWC formulations for the production of NH3 for passive SCR.•All produced NH3 over range of rich conditions; Pd-only had highest NH3…”
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NOx storage and reduction in model lean NOx trap catalysts studied by in situ DRIFTS by Ji, Yaying, Toops, Todd J., Pihl, Josh A., Crocker, Mark

“…NOx storage and reduction on a model Pt/BaO/Al2O3 catalyst was studied by means of in situ DRIFTS measurements. To examine the effect of ceria addition,…”
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NH3 formation over a lean NOX trap (LNT) system: Effects of lean/rich cycle timing and temperature by DiGiulio, Christopher D., Pihl, Josh A., Choi, Jae-Soon, Parks, James E., Lance, Michael J., Toops, Todd J., Amiridis, Michael D.

“…•Below 300°C NOX release and reduction are slow and kinetically limiting.•Above 450°C NOX storage becomes the limiting factor.•Selectivities to NH3 and N2O are…”
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Study of the Theoretical Potential of Thermochemical Exhaust Heat Recuperation for Internal Combustion Engines by Chakravarthy, V. Kalyana, Daw, C. Stuart, Pihl, Josh A, Conklin, James C

“…A detailed thermodynamic analysis of thermochemical recuperation (TCR) applied to an idealized internal combustion engine with single-stage work extraction is…”
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Spatiotemporal distribution of NOx storage and impact on NH3 and N2O selectivities during lean/rich cycling of a Ba-based lean NOx trap catalyst by Choi, Jae-Soon, Partridge, William P., Pihl, Josh A., Kim, Mi-Young, Kočí, Petr, Daw, C. Stuart

“…[Display omitted] ► Distribution of stored NOx evolves continously over space and time. ► Coupled with local chemistry, the distribution of stored NOx impacts…”
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Sulfur and temperature effects on the spatial distribution of reactions inside a lean NOx trap and resulting changes in global performance by CHOI, Jae-Soon, PARTRIDGE, William P, PIHL, Josh A, STUART DAW, C

“…We experimentally studied the influence of temperature and sulfur loading on the axial distribution of reactions inside a commercial lean NOx trap (LNT)…”
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Investigation of NO adsorption and desorption phenomena on a Pd/ZSM-5 passive NOx adsorber by Gu, Yuntao, Sinha Majumdar, Sreshtha, Pihl, Josh A., Epling, William S.

“…[Display omitted] •Pd2+ ions exchanged into ZSM-5 exist in a hydrated state at low temperatures.•Hydration of the Pd2+ ions inhibits the rate of NO uptake.•CO…”
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Intra-catalyst CH4 oxidation pathways on a Pd/Al2O3/CeZrOx-based commercial catalyst and implications on NOx conversion profiles for a natural gas vehicle exhaust under lambda modulation by Deka, Dhruba J., Pihl, Josh. A., Thomas, Calvin R., Partridge, William P.

“…[Display omitted] •Intra-catalyst species measurement was performed on NG-TWC under λ-modulation.•Impact of λ-modulation parameters on reaction pathways was…”
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In-situ DRIFTS measurements for the mechanistic study of NO oxidation over a commercial Cu-CHA catalyst by Ruggeri, Maria Pia, Nova, Isabella, Tronconi, Enrico, Pihl, Josh A., Toops, Todd J., Partridge, William P.

“…•NO oxidation mechanism on Cu-CHA is investigated by in situ DRIFT spectroscopy.•NOx feed to pre-oxidized/pre-reduced samples reveals redox nature of the…”
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Condition-Dependent Pd Speciation and NO Adsorption in Pd/Zeolites by Mandal, Keka, Gu, Yuntao, Westendorff, Karl S, Li, Sichi, Pihl, Josh A, Grabow, Lars C, Epling, William S, Paolucci, Christopher

“…Metal ions exchanged on zeolites represent a unique bridge between heterogeneous solid materials and homogeneous inorganic chemistry. The complexing of…”
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Pre-oxidized and nitrided stainless steel alloy foil for proton exchange membrane fuel cell bipolar plates. Part 2: Single-cell fuel cell evaluation of stamped plates by Toops, Todd J., Brady, Michael P., Tortorelli, Peter F., Pihl, Josh A., Estevez, Francisco, Connors, Daniel, Garzon, Fernando, Rockward, Tommy, Gervasio, Don, Mylan, William, Kosaraju, Sree Harsha

“…Thermal (gas) nitridation of stainless steel alloys can yield low interfacial contact resistance (ICR), electrically conductive and corrosion-resistant nitride…”
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Impact of Selected High-Performance Fuel Blends on Three-Way Catalyst Light Off under Synthetic Spark-Ignition Engine-Exhaust Conditions by Sinha Majumdar, Sreshtha, Pihl, Josh A

“…The U.S. Department of Energy funded Co-Optimization of Fuels and Engines initiative aims to simultaneously develop advanced engines along with…”
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Reactivity of novel high-performance fuels on commercial three-way catalysts for control of emissions from spark-ignition engines by Sinha Majumdar, Sreshtha, Pihl, Josh A., Toops, Todd J.

“…[Display omitted] •Three-way catalyst light-off temperatures vary significantly with fuel composition.•Most oxygenated fuels light off at lower temperatures…”
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Catalytic Exhaust Gas Recirculation-Loop Reforming for High Efficiency in a Stoichiometric Spark-Ignited Engine through Thermochemical Recuperation and Dilution Limit Extension, Part 2: Engine Performance by Chang, Yan, Szybist, James P, Pihl, Josh A, Brookshear, D. William

“…This is the second part of a two-part investigation of on-board catalytic fuel reforming to increase the brake efficiency of a multicylinder, stoichiometric…”
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Integration of an Oxidation Catalyst with Pd/Zeolite-Based Passive NOx Adsorbers: Impacts on Degradation Resistance and Desorption Characteristics by Gu, Yuntao, Marino, Silvia, Cortés-Reyes, Marina, Pieta, Izabela S, Pihl, Josh A, Epling, William S

“…Fully ion-exchanged Pd/SSZ-13 model passive NOx adsorbers (PNA) exhibit significant NOx storage capability, achieving NOx-to-Pd ratios of 1, and NOx desorption…”
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Lean NOx reduction over Ag/alumina catalysts via ethanol-SCR using ethanol/gasoline blends by Gunnarsson, Fredrik, Pihl, Josh A., Toops, Todd J., Skoglundh, Magnus, Härelind, Hanna

“…[Display omitted] •High NOx conversion for EtOH and EtOH/gasoline blends as reductant.•High NH3 formation over pure Ag samples related to formation of…”
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Passive SCR for lean gasoline NOX control: Engine-based strategies to minimize fuel penalty associated with catalytic NH3 generation by Prikhodko, Vitaly Y., Parks, James E., Pihl, Josh A., Toops, Todd J.

“…[Display omitted] •Air-fuel equivalence ratio impacts both NH3 selectivity and fuel penalty.•Fuel penalty reduced with increased engine-out NOX via spark…”
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Production, fuel properties and combustion testing of an iso-olefins blendstock for modern vehicles by Dagle, Vanessa Lebarbier, Affandy, Martin, Lopez, Johnny Saavedra, Cosimbescu, Lelia, Gaspar, Daniel J., Scott Goldsborough, S., Rockstroh, Toby, Cheng, Song, Han, Taehoon, Kolodziej, Christopher P., Hoth, Alexander, Majumdar, Sreshtha Sinha, Pihl, Josh A., Alleman, Teresa L., Hays, Cameron, McEnally, Charles S., Zhu, Junqing, Pfefferle, Lisa D.

“…•A dimethyl-hexenes rich olefins mixture (DMHROM) for gasoline engines.•A pathway for DMHROM production from ethanol was developed and scaled up.•DMHROM…”
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