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Caractérisation thermodynamique des binaires esters méthyliques / n-alcanes représentatifs des mélanges biodiesel / gazole

Abstract : Experimental data of thermodynamic properties of mixtures used in the composition of new fuel generations are very rare in the literature.The aim of this thesis is to contribute to setting up a thermophysical database of constituents used in the composition of biodiesel / diesel mixtures over a wide range of pressure and temperature (1 Pa to 200 kPa).Thanks to the static apparatus available in the laboratory (UMR 5615-Lyon1) and to the various methodologies developed to determine phase equilibrium, the acquisition of reliable data has been obtained for 8 pure substances and their binary mixtures. The vapor pressures of the pure compounds are in good agreement with the literature data in the range above 1 kPa whereas no data has been found to compare with experimental values of the pure compounds or mixtures below 1 kPa.A good correlation of the experimental results was obtained using two thermodynamic models, NRTL and UNIQUAC.The study of the volumetric properties obtained by densimetry, led us to interpret the different interactions that could exist in a binary mixture consisting of ester and alkane and to estimate quantitatively the different contributions to the excess molar volume
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Lakhdar Sahraoui. Caractérisation thermodynamique des binaires esters méthyliques / n-alcanes représentatifs des mélanges biodiesel / gazole. Thermique [physics.class-ph]. Université de Lyon; École Militaire Polytechnique (Alger), 2018. Français. ⟨NNT : 2018LYSE1215⟩. ⟨tel-02111114⟩

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