Chemical Kinetic Study of the Oxidation of a Biodiesel−Bioethanol Surrogate Fuel: Methyl Octanoate−Ethanol Mixtures †

C. Togbé 1 J.-B. May-Carle 1 G. Dayma 1 P. Dagaut 1
1 ICARE - Institut de Combustion, Aérothermique, Réactivité et Environnement
Abstract : There is a growing interest for using bioethanol−biodiesel fuel blends in diesel engines but no kinetic data and model for their combustion were available. Therefore, the kinetics of oxidation of a biodiesel−bioethanol surrogate fuel (methyl octanoate−ethanol) was studied experimentally in a jet-stirred reactor at 10 atm and constant residence time, over the temperature range 560−1160 K, and for several equivalence ratios (0.5−2). Concentration profiles of reactants, stable intermediates, and final products were obtained by probe sampling followed by online FTIR, and off-line gas chromatography analyses. The oxidation of this fuel in these conditions was modeled using a detailed chemical kinetic reaction mechanism consisting of 4592 reversible reactions and 1087 species. The proposed kinetic reaction mechanism yielded a good representation of the kinetics of oxidation of this biodiesel−bioethanol surrogate under the JSR conditions. The modeling was used to delineate the reactions triggering the low-temperature oxidation of ethanol important for diesel engine applications.
Keywords : Biodiesel Jet-stirred reactor Kinetic modeling oxidation -mechanism
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Journal articles
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https://hal.archives-ouvertes.fr/hal-02020238
Contributor : Philippe Dagaut <>
Submitted on : Friday, February 15, 2019 - 10:16:50 AM
Last modification on : Thursday, April 18, 2019 - 9:39:21 AM

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C. Togbé, J.-B. May-Carle, G. Dayma, P. Dagaut. Chemical Kinetic Study of the Oxidation of a Biodiesel−Bioethanol Surrogate Fuel: Methyl Octanoate−Ethanol Mixtures †. Journal of Physical Chemistry A, American Chemical Society, 2010, 114 (11), pp.3896-3908. ⟨10.1021/jp906882h⟩. ⟨hal-02020238⟩

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