2018
DOI: 10.1021/acs.iecr.8b01435
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Global Kinetic Modeling and Analysis of Lean NOx Traps (LNT) Catalysts

Abstract: Lean NO x traps (LNT) is an after-treatment technique that is used for NO x abatement in lean-burn engines. The objective of this work is to develop a generic kinetic model applicable to various LNT catalyst formulations and to apply it to the design and analysis of the LNT reactor. The kinetic model of 16 reactions is proposed using Langmuir−Hinshelwood kinetics. It is validated against experiments reported in the literature, performed for a family of catalyst formulations that use Pt-group metals as the acti… Show more

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Cited by 5 publications
(4 citation statements)
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“…Catalytic oxidation of NO to NO 2 serves as a critical step in advanced NO x purification technologies, such as selective catalytic reduction (SCR), 2 NO x storage reduction (NSR), 3 and lean NO x trap systems. 4 In light of its pivotal importance, a substantial amount of effort has been channeled into the exploitation of high-performance catalysts for NO oxidation.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Catalytic oxidation of NO to NO 2 serves as a critical step in advanced NO x purification technologies, such as selective catalytic reduction (SCR), 2 NO x storage reduction (NSR), 3 and lean NO x trap systems. 4 In light of its pivotal importance, a substantial amount of effort has been channeled into the exploitation of high-performance catalysts for NO oxidation.…”
Section: Introductionmentioning
confidence: 99%
“…Hence, the purification of NO x has emerged as a pivotal and pressing concern, prompting a critical need for the formulation of highly effective, sustainable, and environmentally friendly methodologies to control NO x emissions. Catalytic oxidation of NO to NO 2 serves as a critical step in advanced NO x purification technologies, such as selective catalytic reduction (SCR), NO x storage reduction (NSR), and lean NO x trap systems . In light of its pivotal importance, a substantial amount of effort has been channeled into the exploitation of high-performance catalysts for NO oxidation.…”
Section: Introductionmentioning
confidence: 99%
“…1,2 Apart from fertilizers, urea is used for the synthesis of resins such as melamine, and urea-formaldehyde resin 3 , and as a diesel exhaust fluid which is used in diesel engines for selective catalytic reduction of NOx. 4,5 Urea is synthesized industrially by Bosch-Meiser process that involves the conversion of CO2 and NH3 at a high pressure of 110 atm and elevated temperatures between 160 -180 °C. 6 NH3, a primary raw material for urea production is manufactured by Haber-Bosch process at high temperatures (400 -500 °C) and high pressures (100 -200 atm) utilizing H2 from steam reforming process.…”
Section: Introductionmentioning
confidence: 99%
“…Though the development of new catalytic formulations performed at lab-scale is commonly made considering powder formulations, commercial applications of catalysts for real emission control systems (both for automotive and stationary sources) consider the use of honeycomb monoliths. In particular, for automotive applications, ceramic monoliths made of cordierite (2MgO·2Al 2 O 3 ·5SiO 2 ) are one of the most considered structures for the majority the after-treatment systems, namely, lean NO x traps (LNT), 3-ways catalysts, , diesel oxidation catalysts (DOC), and selective catalytic reduction by ammonia (NH 3 -SCR). , This material is often considered due to its mechanical strength and its low thermal expansion coefficient. Additionally, its porosity and pore size distribution is suitable to be used for washcoat application due to its favorable adherence properties. , …”
Section: Introductionmentioning
confidence: 99%