Synthesis and characterization of 1-(hydroxyethyl)-3-methylimidazolium sulfate and chloride ionic liquids

Yassine Chaker (1) , Hocine Ilikti (2) , Mansour Debdab (3) , Taqiyeddine Moumene , El Habib Belarbi (4) , Anne Wadouachi (5) , Ouissam Abbas , Brahim Khelifa , Serge Bresson (6)

1 Université Ibn Khaldoun de Tiaret = University of Tiaret
2 USTO MB - Université des sciences et de la Technologie d'Oran Mohamed Boudiaf [Oran]
3 ISCR - Institut des Sciences Chimiques de Rennes
4 LSCT - Laboratoire Synthèse et Catalyse [Tiaret]
5 LG2A - Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources - UMR CNRS 7378
6 PSC - Physique des Systèmes Complexes - UR UPJV 4663

We have used the imidazole as a starting compound for the preparation of a new ionic liquid 1-(hydroxyethyl)-3-methylimidazolium sulfate, with a yield of 98% in the two-steps synthesis. This new ionic liquid at room temperature exhibits a greater chemical activity. For the first step, we change the previous synthetic route using 2-chloroethanol as starting material, and with 1-methylimidazole to prepare the 1-(hydroxyethyl)-3-methylimidazolium chloride [EtOHMIM+][Cl-]. In the second stage, we have exchanged the anion Cl- with HSO4-. The ionic liquid shows reasonably high conductivity and thermal stability up to 340 degrees C. Our samples are characterized by H-1 NMR, C-13 NMR and FT-IR. The physical characteristics of the ionic liquid, such as solvation capacity were studied using a thermo-gravimetric Analyzer (NETZSCH DSC 204 F1) in the range of 40-400 degrees C. The results show that the Its may be used as polyelectrolyte for electrochemical applications. (C) 2016 Elsevier B.V. All rights reserved.

Domaines: Biochimie, Biologie Moléculaire

Yassine Chaker, Hocine Ilikti, Mansour Debdab, Taqiyeddine Moumene, El Habib Belarbi, et al.. Synthesis and characterization of 1-(hydroxyethyl)-3-methylimidazolium sulfate and chloride ionic liquids. Journal of Molecular Structure, 2016, 1113, pp.182-190. ⟨10.1016/j.molstruc.2016.02.017⟩. ⟨hal-03613851⟩