Application of Prigogine–Flory–Patterson theory to excess molar volume and speed of sound of 1-n-butyl-3-methylimidazolium hexafluorophosphate or 1-n-butyl-3-methylimidazolium tetrafluoroborate in methanol and acetonitrile

详细信息	查看全文 | 推荐本文 |

• 作者：Mohammed Taghi Zafarani-Moattar and Hemayat Shekaari
• 关键词：1-n-Butyl-3-methylimidazolium hexafluorophosphate ; 1-n-Butyl-3-methylimidazolium tetrafluoroborate ; Excess molar volume ; Speed of sound ; Isentropic compressibility ; Excess isentropic compressibility
• 刊名：Journal of Chemical Thermodynamics
• 出版年：2006
• 期刊代码：123_00219614
• 类别：ch
• 出版时间：November 2006
• 卷：38
• 期：11
• 页码：1377-1384
• 文件大小：278 K

摘要

Excess molar volume V^E, speed of sound u, isentropic compressibility κ_s and excess isentropic compressibility data for binary mixtures of 1-n-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF₆]) or 1-n-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF₄]) in methanol and acetonitrile as function of composition under atmospheric pressure at T = (298.15 to 318.15) K have been used to test applicability of Prigogine–Flory–Patterson (PFP) theory. In the case of [BMIM][PF₆] in methanol and acetonitrile mixtures, data have been reported previously. Interaction parameters have been calculated from V^E values for all studied systems. The PFP theory is capable of reproducing the main features of the experimental V^E, u, κ_s and values by using a fitted binary interaction parameter. An analysis of each of three contributions viz. interactional, free volume and P^* to V^E at equimolar concentration was applied for investigation of solute–solvent interaction and structural features of each components in the studied mixtures.