Methodology for Developing a Diesel Exhaust After Treatment Simulation Tool

Christiansen, Thomas Bøhm; Jensen, Johanne; Åberg, Andreas; Abildskov, Jens; Huusom, Jakob Kjøbsted

doi:10.4271/02-11-01-0004

Cited by 3 publications

(3 citation statements)

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“…The amount of adsorbate on a monolith catalyst is typically reported as the amount of adsorbed NH 3 per surface area, mass, or volume of catalyst. ,, However, in order to compare different catalyst samples, it is meaningful to normalize the amount of adsorbate with the washcoat loading which requires an accurate estimation. In this study, two different washcoat loadings and two different catalyst sample sizes were used, as shown in Table .…”

Section: Methodsmentioning

confidence: 99%

“…Their method is applied to different components in an after-treatment system such as SCR catalysts, diesel oxidation catalysts (DOC), diesel particle filters (DPF), and ammonia slip catalysts (ASC). 15 Furthermore, gas flow reactors are also used as a validation tool when the intrinsic kinetics are determined from microreactor experiments with the catalyst in powder form, that is, instead of the monolith employed in the final application. Nova et al 11 used this method to describe the inhibiting effect of NH 3 for the SCR reaction over vanadiumbased catalysts at low temperature.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Their method is sequential, evaluating the impact on parameter fitting at each step and defining suitable simplifications for obtaining fast and reliable models. Their method is applied to different components in an after-treatment system such as SCR catalysts, diesel oxidation catalysts (DOC), diesel particle filters (DPF), and ammonia slip catalysts (ASC) …”

Section: Introductionmentioning

confidence: 99%

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Characterization Method for Gas Flow Reactor Experiments—NH₃ Adsorption on Vanadium-Based SCR Catalysts

Suarez-Corredor

Bäbler

Olsson

et al. 2021

Ind. Eng. Chem. Res.

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In this study, NH 3 adsorption isotherms for a commercial vanadium-based SCR catalyst coated on a monolith substrate were obtained using a gas flow reactor over a wide range of parameters which have not been performed before in a single study. The isotherms were obtained under different conditions, where adsorption temperature, NH 3 concentration, water concentration, washcoat loading, and catalyst oxidation state were varied. For this purpose, a systematic data processing method was developed, which characterizes the dispersion and delay effects in the experimental setup using a residence time distribution model, and artifacts such as NH 3 adsorbed in the experimental setup and uncertainties in the washcoat loading were removed. As a result, data from different catalyst samples were integrated, and adsorption isotherms with low data spread and well-defined regions were obtained. This allows the identification of the complex nature of the catalyst and dynamics, where multiple types of adsorption sites are present. For instance, the oxidized catalyst has 50% higher NH 3 storage capacity compared to the reduced state of the sample. Moreover, water reduces the NH 3 storage capacity at high concentrations (5.0%), whereas at low concentration (0.5%), water increases the NH 3 adsorption capacity for an oxidized catalyst. The proposed data processing method can be extended for the analysis of further phenomena in catalysts studied using gas flow reactors, complementing current methods and providing information for models with extended validity and lower parameter correlations.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization Method for Gas Flow Reactor Experiments—NH₃ Adsorption on Vanadium-Based SCR Catalysts

Suarez-Corredor

Bäbler

Olsson

et al. 2021

Ind. Eng. Chem. Res.

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Catalytic Paper Filters for Diesel Soot Abatement: Studies at Laboratory and Bench Scales

Sacco

Banús

Milt

et al. 2020

Emiss. Control Sci. Technol.

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Investigation of the effect of different structure parameters and operating factors on the integrated exhaust aftertreatment system for diesel engines and parameter importance analysis

Liao,

Wang,

et al. 2024

Journal of Cleaner Production

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Methodology for Developing a Diesel Exhaust After Treatment Simulation Tool

Cited by 3 publications

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Characterization Method for Gas Flow Reactor Experiments—NH₃ Adsorption on Vanadium-Based SCR Catalysts

Characterization Method for Gas Flow Reactor Experiments—NH₃ Adsorption on Vanadium-Based SCR Catalysts

Catalytic Paper Filters for Diesel Soot Abatement: Studies at Laboratory and Bench Scales

Investigation of the effect of different structure parameters and operating factors on the integrated exhaust aftertreatment system for diesel engines and parameter importance analysis

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Methodology for Developing a Diesel Exhaust After Treatment Simulation Tool

Cited by 3 publications

References 0 publications

Characterization Method for Gas Flow Reactor Experiments—NH3 Adsorption on Vanadium-Based SCR Catalysts

Characterization Method for Gas Flow Reactor Experiments—NH3 Adsorption on Vanadium-Based SCR Catalysts

Catalytic Paper Filters for Diesel Soot Abatement: Studies at Laboratory and Bench Scales

Investigation of the effect of different structure parameters and operating factors on the integrated exhaust aftertreatment system for diesel engines and parameter importance analysis

Contact Info

Product

Resources

About

Characterization Method for Gas Flow Reactor Experiments—NH₃ Adsorption on Vanadium-Based SCR Catalysts

Characterization Method for Gas Flow Reactor Experiments—NH₃ Adsorption on Vanadium-Based SCR Catalysts