Product Selectivity During Regeneration of Lean NO x Trap Catalysts

JA Pihl, JE Parks, CS Daw, TW Root - SAE Transactions, 2006 - JSTOR
NOx reduction product speciation during regeneration of a fully formulated lean NOx trap
catalyst has been investigated using a bench-scale flow reactor. NH³ and N₂O were both …

Overview of the fundamental reactions and degradation mechanisms of NOx storage/reduction catalysts

WS Epling, LE Campbell, A Yezerets… - Catalysis …, 2004 - Taylor & Francis
Over the last several years, nitrogen oxide (s)(NOx) storage/reduction (NSR) catalysts, also
referred to as NOx adsorbers or lean NOx traps, have been developed as an aftertreatment …

The effect of regeneration conditions on the selectivity of NOx reduction in a fully formulated lean NOx trap catalyst

J Wang, Y Ji, V Easterling, M Crocker, M Dearth… - Catalysis Today, 2011 - Elsevier
The effect of regeneration conditions on NH3 formation in a fully formulated Pt–
Rh/BaO/Al2O3 lean NOx trap catalyst was investigated. Experiments were performed on a …

Nitrogen selectivity in lean NOx trap catalysis with diesel engine in-cylinder regeneration

J Parks, S Huff, J Pihl, JS Choi, B West - SAE transactions, 2005 - JSTOR
NOx emissions have traditionally been difficult to control from diesel engines; however, lean
NOx trap catalysts have been shown to reduce NOx emissions from diesel engines by …

The effects of regeneration conditions on NOx and NH3 release from NOx storage/reduction catalysts

WS Epling, A Yezerets, NW Currier - Applied Catalysis B: Environmental, 2007 - Elsevier
A standard protocol developed by the Cross-Cut Lean Exhaust Emissions Reduction
Simulations (CLEERS) group was used to investigate the evolution of N-byproduct species …

New operation strategy for driving the selectivity of NOx reduction to N2, NH3 or N2O during lean/rich cycling of a lean NOx trap catalyst

D Mráček, P Kočí, JS Choi, WP Partridge - Applied Catalysis B …, 2016 - Elsevier
Periodical regeneration of NO x storage catalyst (also known as lean NO x trap) by short rich
pulses of CO, H 2 and hydrocarbons is necessary for the reduction of nitrogen oxides …

Characterization of lean NOx trap catalysts with in-cylinder regeneration strategies

J Parks, B West, M Swartz, S Huff - 2008 - sae.org
Lean NOx trap (LNT) catalysts with different formulations have been characterized on a light-
duty diesel engine platform. Two in-cylinder regeneration strategies were used during the …

Effects of Lean/Rich Timing and Nature of Reductant on the Performance of a NOx Trap Catalyst

Y Li, S Roth, J Dettling, T Beutel - Topics in Catalysis, 2001 - Springer
A NO x trap catalyst was studied in a laboratory reactor under simulated diesel passenger
car conditions. The effects of lean/rich duration and the nature of reductant are investigated …

Impact of Rh Oxidation State on NOx Reduction Performance of Multi-Component Lean NOx Trap (LNT) Catalyst

J Li, N Currier, A Yezerets, HY Chen, H Hess… - SAE International Journal …, 2016 - JSTOR
ABSTRACT Typical Lean NOx Trap (LNT) catalyst composition includes precious metal
components (Pt, Pd, and/or Rh), responsible for NO oxidation during lean operation and …

NOx storage and reduction in lean burn vehicle emission control: a catalytic engineer's playground

MP Harold - Current Opinion in Chemical Engineering, 2012 - Elsevier
The reduction of NO x (NO+ NO 2) in lean burn vehicle exhaust is the latest challenge for
catalytic engineers to meet increasingly stringent emissions standards. The lean NO x trap …