Preparation and Characterization of Ionic Liquids Based upon Sulfonate

The work presented in this book includes the preparation and characterization of choline dodecyl benzene sulfonate and phenyl trimethyl ammonium dodecyl benzene sulfonate, which were prepared and showed almost room temperature ionic liquids. Other ionic liquids based on solid mixing dodecyl benzene sulfonate salts, and benzoic acid, salicylic acid with choline chloride showed a larger melting point depression. (Ammonium dodecyl benzene sulfonate /choline chloride) mixture has a deep eutectic point , while the two mixtures (benzoic acid / choline chloride) and (salicylic acid / choline chloride) gave a similar eutectic point, which were correspond with the room temperature molten salt (ionic liquids) definition, which is melt below the 100 oC. However, (sodium dodecyl benzene sulfonate /choline chloride) mixture and (potassium dodecyl benzene sulfonate /choline chloride) mixture afforded higher eutectic temperature than the room temperature ionic liquids. Another set of mixtures that based on mixing the same previous compounds, but with urea instead of choline chloride. These mixtures showed with dodecyl benzene sulfonate salts.