Search Results - "Lambert, Christine K."

Structural Interconversion between Agglomerated Palladium Domains and Mononuclear Pd(II) Cations in Chabazite Zeolites by Lardinois, Trevor M, Bates, Jason S, Lippie, Harrison H, Russell, Christopher K, Miller, Jeffrey T, Meyer, Harry M, Unocic, Kinga A, Prikhodko, Vitaly, Wei, Xinyi, Lambert, Christine K, Getsoian, Andrew Bean, Gounder, Rajamani

“…Palladium-exchanged zeolites are candidate materials for passive NO x adsorption in automotive exhaust aftertreatment, where mononuclear Pd cations behave as…”
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Mechanistic assessment of low temperature NOx adsorbers for cold start NOx control on diesel engines by Theis, Joseph R., Lambert, Christine K.

“…[Display omitted] •NOx storage and release on Pd/CZO NOx Adsorbers.•NOx storage improved by presence of C2H4, CO, or H2.•Improvement attributed to NO and…”
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An assessment of low temperature NOx adsorbers for cold-start NOx control on diesel engines by Theis, Joseph R., Lambert, Christine K.

“…•NOx storage and release on Pt-rich and Pd-rich low temperature NOx adsorbers.•Measured NOx capacity as function of temperature, determined minimum purge…”
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Analysis of High Mileage Gasoline Exhaust Particle Filters by Lambert, Christine K., Bumbaroska, Mira, Dobson, Douglas, Hangas, Jon, Pakko, James, Tennison, Paul

“…The purpose of this work was to examine gasoline particle filters (GPFs) at high mileages. Soot levels for gasoline direct injection (GDI) engines are much…”
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Propene Poisoning on Three Typical Fe-zeolites for SCR of NOx with NH3: From Mechanism Study to Coating Modified Architecture by LEI MA, JUNHUA LI, YISUN CHENG, LAMBERT, Christine K, LIXIN FU

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Mechanism of Propene Poisoning on Fe-ZSM-5 for Selective Catalytic Reduction of NOx with Ammonia by JUNHUA LI, RONGHAI ZHU, YISUN CHENG, LAMBERT, Christine K, YANG, Ralph T

“…Application of Fe-zeolites for urea-SCR of NOx in diesel engine is limited by catalyst deactivation with hydrocarbons. In this work, we investigated the effect…”
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Activity, stability and hydrocarbon deactivation of Fe/Beta catalyst for SCR of NO with ammonia by He, Chongheng, Wang, Yuhe, Cheng, Yisun, Lambert, Christine K., Yang, Ralph T.

“…The activities of Fe/Beta catalysts for SCR of NO with NH 3 will decrease due to the addition of propylene in the standard reactants at 250 °C. After the…”
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Rapidly pulsed reductants for diesel NOx reduction with lean NOx traps: Effects of pulsing parameters on performance by Reihani, Amin, Fisher, Galen B., Hoard, John W., Theis, Joseph R., Pakko, James D., Lambert, Christine K.

“…[Display omitted] •Rapidly Pulsed Reductants (RPR) works only for catalysts with NOx storage capacity.•Rich HC pulses are required for high NOx conversion (in…”
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Analysis of Ash in Low Mileage, Rapid Aged, and High Mileage Gasoline Exhaust Particle Filters by Lambert, Christine K., Chanko, Timothy, Jagner, Mark, Hangas, Jon, Liu, Xin, Pakko, James, Kamp, Carl Justin

“…To meet future particle mass and particle number standards, gasoline vehicles may require particle control, either by way of an exhaust gas filter and/or…”
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Effect of Reductants on the NOx Storage Performance of a Pd/CZO Low Temperature NOx Adsorber by Theis, Joseph R., Lambert, Christine K.

“…Low temperature NOx adsorbers (LTNA) adsorb the NOx emissions from diesel engines during the cold start period and then thermally release the NOx when the…”
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Sensitivity of Three-Way Catalyst Light-Off Temperature to Air-Fuel Ratio by Getsoian, Andrew Bean, Theis, Joseph R., Lambert, Christine K.

“…The operating conditions of the automotive three-way catalyst (TWC) are characterized by continuous variation of the air-fuel ratio (λ) that determines the…”
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Possible origin of improved high temperature performance of hydrothermally aged Cu/beta zeolite catalysts by Peden, Charles H.F., Kwak, Ja Hun, Burton, Sarah D., Tonkyn, Russell G., Kim, Do Heui, Lee, Jong-Hwan, Jen, Hung-Wen, Cavataio, Giovanni, Cheng, Yisun, Lambert, Christine K.

“…[Display omitted] ► Moderate hydrothermal treatment of a Cu/beta zeolite ammonia SCR catalyst leads to loss of low temperature activity. ► However, maintenance…”
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Remarkable improvement in low temperature performance of model three-way catalysts through solution atomic layer deposition by Getsoian, Andrew, Theis, Joseph R., Paxton, William A., Lance, Michael J., Lambert, Christine K.

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Enhanced Durability of a Cu/Zeolite Based SCR Catalyst by Cavataio, Giovanni, Jen, Hung-Wen, Warner, James R, Girard, James W, Kim, Jeong Y, Lambert, Christine K

“…Passenger and light duty diesel vehicles will require up to 90% NOx conversion over the Federal Test Procedure (FTP) to meet future Tier 2 Bin 5 standards…”
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Current state of the art and future needs for automotive exhaust catalysis by Lambert, Christine K.

“…For the foreseeable future, we will continue to rely on the internal combustion engine for mobility of people and goods. The ubiquitous three-way catalyst does…”
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Mechanism of Propene Poisoning on Fe-ZSM-5 for Selective Catalytic Reduction of NO x with Ammonia by Li, Junhua, Zhu, Ronghai, Cheng, Yisun, Lambert, Christine K, Yang, Ralph T

“…Application of Fe-zeolites for urea-SCR of NO x in diesel engine is limited by catalyst deactivation with hydrocarbons. In this work, we investigated the…”
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Laboratory Study of Soot, Propylene, and Diesel Fuel Impact on Zeolite-Based SCR Filter Catalysts by Cavataio, Giovanni, Warner, James R, Girard, James W, Ura, Justin, Dobson, Douglas, Lambert, Christine K

“…Selective Catalytic Reduction (SCR) catalysts have been designed to reduce NOx with the assistance of an ammonia-based reductant. Diesel Particulate Filters…”
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Impact and Prevention of Ultra-Low Contamination of Platinum Group Metals on SCR Catalysts Due to DOC Design by Cavataio, Giovanni, Jen, Hung-Wen, Girard, James W, Dobson, Douglas, Warner, James R, Lambert, Christine K

“…Diesel aftertreatment systems configured with a diesel oxidation catalyst (DOC) upstream of an urea selective catalytic reduction (SCR) catalyst run the risk…”
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Post Mortem of an Aged Tier 2 Light-Duty Diesel Truck Aftertreatment System by Lambert, Christine K., Cheng, Yisun, Dobson, Douglas, Hangas, Jon, Jagner, Mark, Jen, Hungwen, Warner, James

“…A 2005 prototype diesel aftertreatment system consisting of diesel oxidation catalysts (DOC), Cu/zeolite Selective Catalytic Reduction (SCR) catalyst, and…”
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Effect of binder addition on the properties of unsupported γ-Al2O3 membranes by LAMBERT, C. K, GONZALEZ, R. D

“…Unsupported gamma-Al2O3 membranes prepared by the sol-gel method were characterised to determine the effect of the addition of binders including polyethylene…”
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