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Abstract

Mixing aluminum nitrate nonahydrate with urea produced a room temperature clear, colorless ionic liquid with the lowest freezing point at a 1:1.2 mole ratio. The freezing point phase diagram was determined, and physical properties such as density, viscosity, and conductivity were measured at room temperature, showing similarities to other ionic liquids. FT-IR, UV-Vis, 1H NMR, and 13C NMR were used to study interactions, suggesting a -CO-Al bond and proposing basic ion [Al(NO3)4]ˉ and acidic ion [Al(NO3)2.xU]+. Water molecules are believed to interact with both ions. The redox potential was found to be around 2V, ranging from -0.6 to +1.4V, with thermal stability up to 326°C.

Keywords

Room Temperature Ionic liquids (ILs), Green solvent, Physicochemical properties

Article Type

Article

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