Investigation of Hydrocarbons Conversion Over a Pt-Based Automotive Diesel Oxidation Catalyst: Application to Exhaust Port Fuel Injection

Mathieu, O.; Lavy, Jacques; Jeudy, Eric

doi:10.1007/s11244-009-9365-3

Cited by 9 publications

(9 citation statements)

References 10 publications

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“…[11][12][13][14][15][16][17][18] Finally, the effect of the H 2 O adsorption mechanism is also implemented in the model. This is an important phenomenon that can strongly influence the HC adsorption and therefore the general DOC performance, especially during the engine warm-up.…”

Section: Doc ''Catalyst'' Modelmentioning

confidence: 99%

“…A split among the different HC species representative of the diesel exhaust gas 7 –18 is summarized in Table 1, while Figure 4 shows an example of different HC adsorption curves used in the analyses presented in the next sections. These curves, representing the HC adsorption as a function of the DOC temperature, have been derived from the available literature 7,8,10 and have shown general validity.…”

Section: The Doc Modelmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of diesel oxidation catalysts for calibration and control purpose

Mallamo

Longhi

Millo

et al. 2013

International Journal of Engine Research

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An approach to the analysis of the performance of the diesel oxidation catalysts is presented in this article. A modeling methodology is proposed, whose main characteristics are the usage of a limited set of input data for the execution of the simulations, the minimal effort required for the preliminary calibration of the models and the reduced computational time. The developed diesel oxidation catalyst model structure is described, and its predictive capability is shown by means of a comparison with experimental measurements. The model is based on quasi-zero-dimensional and quasisteady-state approaches, which ensure a reasonable compromise between practicality of usage (including faster than real-time computational time) and quality of the results. Thanks to the quick execution and the accuracy of the results, the proposed modeling approach can be used not only for the development of the diesel powertrains but also for the optimization of the related control and calibration strategies. This process is particularly effective when the models for the aftertreatment systems are coupled with models for the prediction of the engine-out quantities and with software tools for the virtual calibration of the main engine and exhaust system control parameters. A specific example of the effectiveness of this kind of analysis is also given in this article, with focus on the assessment of the system robustness.

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Section: Doc ''Catalyst'' Modelmentioning

confidence: 99%

Section: The Doc Modelmentioning

confidence: 99%

Modeling of diesel oxidation catalysts for calibration and control purpose

Mallamo

Longhi

Millo

et al. 2013

International Journal of Engine Research

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“…Platinum-based catalysts have been widely used in the chemical industry for the catalytic dehydrogenation of light alkanes, such as ethane and propane [1,2], as well as the automotive industry to catalytically oxidize harmful pollutants, including CO, NO, and hydrocarbons [3][4][5][6]. Ceria has been used in automotive catalysts, due to its oxygen storage capacity and the ability to stabilize active metals [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

In Situ Investigations on the Facile Synthesis and Catalytic Performance of CeO2-Pt/Al2O3 Catalyst

Wang

Ren

et al. 2020

Catalysts

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Ceria-modified Pt/Al2O3 catalyst has been commonly prepared by the impregnation of platinum on ceria-modified alumina and widely applied in the chemical industry and automotive industry. The in situ diffuse reflectance infrared Fourier transformed spectroscopy (DRIFTS), and thermogravimetric (TG) analysis techniques were employed to investigate the typical mechanisms of the bis(ethanolammonium)hexahydroxyplatinate(IV) and cerium nitrate decomposition catalyzed by Ptδ+ species for the facile synthesis of CeO2-Pt/Al2O3 catalyst. It was found that Pt4+-catalyzed decomposition of cerium nitrate leads to the higher dispersity of ceria and forming more active oxygen species, on the basis of X-ray diffraction (XRD) and H2 temperature-programmed reduction (H2-TPR) results. The in situ activity measurements were also performed to investigate the reaction mechanisms and the specific activities for the catalytic CO, NO, C3H6 and C3H8 co-oxidation. The results indicate that undesirable N2O by-product is formed by the selective catalytic reduction (SCR) of NO by C3H6 below 350 °C. The cerium addition effectively improves the activity of catalytic oxidation, but exhibits an increased N2O yield, due to the increased reducibility.

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“…Diesel engines and diesel generators were widely adopted in all spheres of transport and the industry. Thanks to diesel engines more high level of effectiveness of use of fuel in comparison with gasoline engines is reached: the modern diesel units spend fuels for about 30.0% less, than gasoline motors with direct injection of the same generation [1][2][3][4][5] . Nevertheless, at operation of diesel generators arise the dangerous and harmful factors (noise, vibration, exhaust gases) as a result of which action the ecological situation is broken, the exhaust gases of diesel engines contain significantly higher concentration of solid particles which existence in air can be the cause of some serious illness, including oncological violations, and even premature death [6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Study of Catalysts on Metal blocks for Neutralization of Exhaust Gases of the Stationary Diesel Generator

Sassykova¹,

Nalibayeva²,

Aubakirov³

et al. 2017

Orient. J. Chem

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The work aim was preparation of catalysts with various active phase on metal block carriers and test their effectiveness on exhaust gases of the stationary diesel generator at various loadings. The active phase was prepared on the basis of the platinum group metals, oxides of nickel, manganese. The catalyst on the basis of 0.1% of Pt kept the activity during 100 h. test on the diesel generator. The most effective catalyst at all engine operating conditions was the sample containing 5% of nickel oxide and manganese and activated of 0.1% Pt. The catalytic samples on the basis of Ni and Mn promoted by Pd (0.1%, 0.25%) and Pt (0.1%), provide high degree of conversion of CO to CO 2 , C x H y to CO 2 and H 2 O, NO to N 2 .

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Investigation of Hydrocarbons Conversion Over a Pt-Based Automotive Diesel Oxidation Catalyst: Application to Exhaust Port Fuel Injection

Cited by 9 publications

References 10 publications

Modeling of diesel oxidation catalysts for calibration and control purpose

Modeling of diesel oxidation catalysts for calibration and control purpose

In Situ Investigations on the Facile Synthesis and Catalytic Performance of CeO2-Pt/Al2O3 Catalyst

Preparation and Study of Catalysts on Metal blocks for Neutralization of Exhaust Gases of the Stationary Diesel Generator

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