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Theses

Valorisation catalytique d’un acide carboxylique issu de l’industrie sucrière

Abstract : This thesis is focused on the catalytic conversion of aconitic acid (a co-product of sugarcane industry) into molecules of industrial interest, by two catalytic ways. 1) By homogeneous catalysis, the acid hydrogenation into polyols, was carried out in a batch reactor using a Ru complex [Ru(acac)3/Triphos]. The various reaction parameters was optimized in the model reaction of hydrogenation of succinic acid into 1.4-butanediol. Subsequently, these optimal reaction conditions were used for the hydrogenation of aconitic acid and resulted to a predominant formation of 2-methyl 1,4-butanediol. 2) By heterogeneous catalysis, the hydro-cyclization reaction of aconitic acid into MTHF or lactones, was performed in a continuous reactor in the presence of copper catalysts, using aconitic acid solutions in ethanol as substrate. The different conditions of the catalytic test and catalyst synthesis was optimized. Furthermore, the different catalysts tested in this thesis work was characterized using complementary techniques (BET, Elementary analysis, XRD, XPS and TEM) in order to correlate the superficial properties to the catalytic activity
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Waël Hneine. Valorisation catalytique d’un acide carboxylique issu de l’industrie sucrière. Catalyse. Université de Lyon, 2016. Français. ⟨NNT : 2016LYSE1080⟩. ⟨tel-02918182⟩

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