Determination and correlation of the solubility of four Bronsted-acidic ionic liquids based on benzothiazolium cations in six alcohols

作者：Wang Litao; Wang Xiaomin; Zuo Tao; Sun Qiaomei; Liu Pengcheng; Yao Shun; Song Hang^*

来源：Journal of Chemical Thermodynamics, 2014, 72: 48-53.

DOI：10.1016/j.jct.2013.12.031

• Ionic liquids
• Solubility
• Apelblat equation
• lambda h Equation
• van't Hoff equation

Solubilities of four acidic ionic liquids based on benzothiazolium cations in six alcohols (methanol, ethanol, 1-propanol, 2-propanol, 1-butanol and 2-methyl-1-propanol) from at temperatures from (253 to 384) K were determined using a static equilibrium method under atmospheric pressure. The modified Apelblat equation and lambda h equation were employed to correlate the experimental data with good agreement. The solubilities of ILs increase with increasing temperature. It is interesting to find that the solubility of some ILs in alcohols are with "temperature-sensitive'' properties. The solubility is related with the polarity and molecular structures of the solvent, as well as the strength of hydrogen bonding between alcohols and anionic groups of ILs. The dissolution enthalpy and entropy of ILs were calculated by the van't Hoff equation. This study provides useful information for further research and application of the ionic liquids.

• 出版日期2014-5
• 单位四川大学