Étude des extractions de composés organiques à l'aide de liquides ioniques et nanoparticules d'oxydes de métaux

Abstract : This study concerns a simultaneous utilization of ionic liquids (Ils) and nanoparticles of metal oxides (NPs) to extracting organic compounds from aqueous and organic solutions. It was observed that the selectivity of organic compounds extracted with ILs makes is excellent and that may be enhanced when IL was used together with NPs. Two techniques were used to enhance the selectivity. At first, the liquid-liquid extraction was performed using a IL phase containing NP suspension in contact with an aqueous or organic phase. Secondly, the nanoextractors NPs/IL were directly dispersed in solution. The quality of results obtained was a complex function of ILs, NPs and organic compounds to be extracted. The mechanism of NP aggregate formation in aqueous solutions of ILs was also studied. It was demonstrated that the nanoaggregates formed with NPs are soaked with ILs and may act as IL nanoextractors. Results presented demonstrated that NPs/IL systems may be useful in extraction of organic compounds. Indeed, numerous extraction experiments made it possible to define optimal conditions to carry out successful extractions. The most promising results were obtained with extraction of diluted solutes
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Seyed Mohammad Hossein Sajjadi. Étude des extractions de composés organiques à l'aide de liquides ioniques et nanoparticules d'oxydes de métaux. Autre. Université de Lorraine, 2013. Français. ⟨NNT : 2013LORR0223⟩. ⟨tel-01750519⟩

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