Effect of hydrocarbon species on no oxidation over diesel oxidation catalysts

Irani, Karishma; Epling, William S.; Blint, Richard J.

doi:10.1016/j.apcatb.2009.08.022

Cited by 66 publications

(44 citation statements)

References 35 publications

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“…1. C 3 H 6 oxidation was negatively affected in the presence of NO in the feed stream as expected, with the light-off temperature increased by around 60°C due to competitive adsorption of NO and C 3 H 6 for Pt sites [3,4]. When the temperature was below 200°C, NO oxidation to NO 2 was negatively affected by the presence of C 3 H 6 , with NO 2 observed only once most of the C 3 H 6 is oxidized.…”

Section: Resultsmentioning

confidence: 52%

“…When the temperature was below 200°C, NO oxidation to NO 2 was negatively affected by the presence of C 3 H 6 , with NO 2 observed only once most of the C 3 H 6 is oxidized. This is because any NO 2 formed can be consumed by C 3 H 6 [3]. However, between 200 and 250°C, there was a slight improvement in NO conversion to NO 2 in the presence of C 3 H 6 and then inhibition was again observed between 250 and 320°C.…”

Section: Resultsmentioning

confidence: 68%

“…DOCs commonly consist of Pt, due to its NO, CO and HC oxidation ability, supported on high surface area materials such as Al 2 O 3 . In terms of NO, CO and HC oxidation over a Pt/Al 2 O 3 DOC, the oxidation reactions are mutually inhibited by one another due to competitive adsorption on the same active sites [3,4]. Furthermore, the reaction between product NO 2 and HC/CO is catalytically more favorable than that with O 2 , which results in little to no net NO 2 made in the presence of CO and HC [4,5].…”

Section: Introductionmentioning

confidence: 96%

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NO Oxidation Inhibition by Hydrocarbons over a Diesel Oxidation Catalyst: Reaction Between Surface Nitrates and Hydrocarbons

Luo

Epling

2011

Catal Lett

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Section: Resultsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 96%

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NO Oxidation Inhibition by Hydrocarbons over a Diesel Oxidation Catalyst: Reaction Between Surface Nitrates and Hydrocarbons

Luo

Epling

2011

Catal Lett

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“…Experimental studies of HC inhibition on NO oxidation has been reported in literature by using a number of HC compounds such as C3H6 [9,10], C3H8 [11], Dodecane [11,12] and mxylene [12]. Among them, C3H6 is often used as the model HC compounds for DOC studies.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, C3H6 is often used as the model HC compounds for DOC studies. The mechanism of C3H6 inhibition by competitive adsorption on the active sites [10] as well as C3H6 reaction with NO2 to NO [9,12] have been proposed in literature.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Modeling of C3H6 Inhibition on NO Oxidation over Pt Catalyst

Azis

Creaser

2016

Bull. Chem. React. Eng. Catal.

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Exhaust after treatment for lean burn and diesel engine is a complex catalytic system that consists of a number of catalytic units. Pt/Al2O3 is often used as a model Diesel Oxidation Catalyst (DOC) that plays an important role to facilitate oxidation of NO to NO2. In the present study, we proposed a detailed kinetic model of NO oxidation as well as low temperature C3H6 inhibition to simulate temperatureprogrammed reaction (TPR) data for NO oxidation over Pt/Al2O3. A steady-state microkinetic model based on Langmuir-Hinshelwood mechanism for NO oxidation was proposed. In addition, low temperature C3H6 inhibition was proposed as a result of site blocking as well as surface nitrite consumption. The model can explain the experimental data well over the studied temperature range.

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Aftertreatment Technologies: State‐of‐the‐Art and Emerging Technologies

Fino

Russo

Bensaid

2015

Handbook of Clean Energy Systems

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In recent years increasing attention has been paid to the emissions from gasoline diesel engines. Meeting the emission levels imposed by legislation requires the development of a number of critical technologies to fulfill these very stringent limits. This article is focused on these innovative technologies with special reference to catalytic reactors for carbon monoxide ( CO ), hydrocarbons ( HC ), oxides of nitrogen (NO x ), particulate matter ( PM ), removals for gasoline and diesel engines.

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Effect of hydrocarbon species on no oxidation over diesel oxidation catalysts

Cited by 66 publications

References 35 publications

NO Oxidation Inhibition by Hydrocarbons over a Diesel Oxidation Catalyst: Reaction Between Surface Nitrates and Hydrocarbons

NO Oxidation Inhibition by Hydrocarbons over a Diesel Oxidation Catalyst: Reaction Between Surface Nitrates and Hydrocarbons

Kinetic Modeling of C3H6 Inhibition on NO Oxidation over Pt Catalyst

Aftertreatment Technologies: State‐of‐the‐Art and Emerging Technologies

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