新型Br?nsted-Lewis双酸型离子液体的合成及其酸性质研究

Novel Br?nsted-Lewis acidic ionic liquid was synthesized and characterized by FT-IR, 1H NMR, 13C NMR and EI-MS. The results indicated that the obtained compounds were just the target products with the relevant acidity. Br?nsted-Lewis acidic ILs were both Br?nsted and Lewis acidic. The cations contributed to the Br?nsted acidity, and the anions determined the Lewis acidity. The acidity of Br?nsted acidic functional ILs comes from the alkyl sulfonic acid which is covalently tethered in ILs cations. The acidity of Leiws acidic functional ILs can be adjusted in a wide range depending on the proportion of organic base to Lewis acid, and it is raised by increasing amount of Lewis acids.