Abstract

Nowadays Ionic Liquids (ILs) salts becomes a major class of attention due to their numerous industrial applications in various fields such as softest solvents, catalysts, batteries, wastewater treatment…etc. In this review, we highlight and present ionic liquid nitrogen-based in both aliphatic and aromatic compounds. Aliphatic based nitrogen ionic liquids are prepared from different sources like trimethylamine, diethylamine, triethylamine, -tripropylamine, iso-propylamine, n-tributylamine, and n-butylamine. However, to prepare aromatic based nitrogen ionic liquids, it’s better to use amidazole, Quinine, pyridine, Pyrrolidin, Pyrrol and Piperidine. A set of physicochemical methods used to characterize ionic liquids such as UV, FTIR, NMR, and TGA are used for thermal investigation. It can be seen that during ionic liquid preparation some impurities remain such as negative radical impurities. This review shows an opportunity to understand ionic liquids preparation from different sources, stability, characterization and their main application.

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